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Controlled Variable patents

      

This page is updated frequently with new Controlled Variable-related patent applications.

Capacitive sensor
The present invention is directed to a cv conversion amplifier which is small in current consumption and capable of securing a sufficient capacitance-voltage conversion gain and a sufficient amplitude range of an output voltage and a capacitive sensor using the same which is low power consumption, low in noise, and wide in an input signal allowable range. A capacitive sensor includes first and second detection capacitors, a cv conversion circuit includes first and second feedback capacitors and obtains a voltage based on capacitance values of the first and second feedback capacitors, an ad converter performs analog digital conversion on an input voltage and obtains a digital signal, a digital control unit receives the digital signal as an input, and first and second digitally controlled variable capacitors have capacitance values that are controlled by the digital control unit..

Circuit for controlling gate current of a semiconductor switching device
The present disclosure discloses a circuit and a method for controlling gate current of a semiconductor switching device. The circuit comprises a current controlled variable inductor connected to a gate terminal of the semiconductor switching device and a feedback control circuit.
Hitachi, Ltd.


Deflection control apparatus
A deflection control apparatus is configured to perform a deflection control in which a subject vehicle is deflected by a braking force difference between left and right wheels. The deflection control apparatus is provided with a releaser configured to release the deflection control if a steering operation, which is an operation of deflecting the subject vehicle in a direction opposite to a direction in which the subject vehicle is deflected by the deflection control, is detected during the deflection control.
Toyota Jidosha Kabushiki Kaisha


Flicker control for electric arc furnace
It is proposed herein to employ thyristor firing angles as a fast prediction of flicker in power supply for an electric arc furnace. It is further proposed to actively modify operating variables for the electric arc furnace to maintain the flicker below a predefined threshold.
Hatch Ltd.


Heating, ventilation, and air conditioning system controller
Heating, ventilation, and air conditioning (hvac) controllers are described herein. One method includes receiving an approximate relationship between each of a number of controlled and manipulated variables of an hvac system, designating one of the number of controlled variables as a primary controlled variable, determining operating parameters for each of the number of manipulated variables that maintain the primary controlled variable based, at least in part, on the approximate relationship between the primary controlled variable and each respective manipulated variable, and determining operating parameters for each of the number of manipulated variables that maintain each of the other controlled variables based, at least in part, on the approximate relationship between each respective other controlled variable and each respective manipulated variable and the determined operating parameters for each of the number of manipulated variables that maintain the primary controlled variable..
Honeywell International Inc.


Control device
This control device is configured to, based on a premise that an operating condition of a plant is a specific operating condition that is defined in advance, search for a virtual current value of a controlled variable for ensuring that a specific state quantity does not conflict with a constraint in the future using a prediction model, set the virtual current value which was found by the search to a target value of the controlled variable, and determine a manipulated variable of the plant so that an actual current value of the controlled variable approaches the target value. Due to this configuration, even if the operating condition of the plant suddenly changes to the specific operating condition, the controlled variable of the plant can be adjusted in advance so that the specific state quantity in the specific operating condition does not conflict with the constraint..
Toyota Jidosha Kabushiki Kaisha


Closed loop and/or open loop control an electropneumatic field device
In a closed loop control method for an electropneumatic field device, an electronic target value input of a command variable corresponding to a target value of a control center is received by the open loop and/or closed loop control electronics, an electronic output for a manipulating variable to pilot the electropneumatic converter is generated by the open loop and/or closed loop control electronics; and, in a predetermined operating condition of the field device, the manipulating variable is determined by a closed loop control algorithm based on the command variable and on another controlled variable different from an actual control member position measurement value.. .
Samson Aktiengesellschaft


Method for controlling technical processes with linearization
A method for controlling a technical process with a controller that generates a correcting variable, where a controlled variable approximately constitutes or forms a step function as a function of the correcting variable, in which in a first section of a value range of the correcting variable, the controlled variable forms a first plateau with values that are virtually the same, in a second section of the value range of the correcting variable, the controlled variable has a steep transition from the first plateau to a second plateau with values that are likewise virtually the same, and in a third section of the value range of the correcting variable, the controlled variable forms the second plateau. According to this invention, the step function is approximated by an approximation function in the form of a sigmoid function.
Bayer Cropscience Ag


Reducing externally variable displacement compressor (evdc) start-up delay
An externally-controlled variable displacement compressor (evdc) cold-start method is described including, during an evdc cold-start procedure, iteratively alternating an amount of a control current supplied to an electronic control valve (ecv) associated with the evdc between no control current and a full control current. Systems for implementing the described method are provided..
Ford Global Technologies, Llc


System and superior performance with respect to best performance values in model predictive control applications
Model predictive control is used to obtain the best performance value for an objective in a dynamic environment. One or more best performance values for a model predictive application are obtained by utilizing asymmetric dynamic behavior that pushes the process to the edges of the operative window.
Shell Oil Company


Digitally controlled variable stiffness ski, snowboard, and boots system

A system, method and apparatus for a digitally controlled variable stiffness item of athletic equipment, such as a ski, snowboard, and boots. A core of thermally responsive metal alloy, such as nitinol is disposed within the athletic equipment.

Method for operating an axial piston machine of swashplate design

A method for operating an axial piston machine of swashplate design, in which a swashplate is settable by means of an adjustment device, and in which a controlled variable of the axial piston machine is regulated by predetermining a manipulated variable. Under the assumption of a constant intended value of the controlled variable, a future profile of the controlled variable is ascertained using a model of the axial piston machine in which respective current values of at least one operating variable of the axial piston machine, which comprises the controlled variable, and a current value of the manipulated variable are taken into account.
Robert Bosch Gmbh

Control of a metal-cutting machining process by means of p-controller and a load-dependent control factor

A method for controlling a cutting machining process on a machine tool by a p-controller that changes a controlled variable u(t) affecting the cutting machining process based on a control deviation e(t) between a control quantity y(t) and a guide quantity w(t). To improve the control, the control factor (k) of the p-controller is variable and determined depending on instantaneous value of the control quantity y(t) via load characteristic fields.
Zf Friedrichshafen Ag

Method and controller for controlling a continuous process

A method and controller compensates control variables of a continuous process prior to the control variables being input to the controller/control matrix to at least partially mask the effect of a selected disturbance or a manipulated variable on that controlled variable to the controller. The controlled variable(s) has been chosen to be an inference of a desired underlying or related variable which is not directly measurable.
Woodside Energy Technologies Pty Ltd

Steering control device

A steering control device includes a controller configured to execute turning processing of controlling a controlled variable to a command value corresponding to an operation of a steering wheel by controlling a turning-side actuator in a cutoff state, the controlled variable being at least one of a turning angle of the steered wheels and a turning angle rate that is a changing rate of the turning angle; and transmission switching processing of controlling a switching device such that the switching device is switched from the cutoff state to a transmission state on condition that an absolute value of a difference between the controlled variable and the command value continues to be equal to or larger than a threshold when the turning processing is executed.. .
Jtekt Corporation

Pullable clock oscillator

A clock oscillator includes with a pullable baw oscillator to generate an output signal with a target frequency. The baw oscillator is based on a baw resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance.
Texas Instruments Incorporated

Data-oriented feedback controller and data-oriented feedback control method

A data-oriented feedback controller disclosed herein allows the user to wear or use a device under control comfortably, and includes: a device under control for determining a controlled variable θ(t) with respect to a human being in accordance with an input manipulated variable u(t); a primary controller for determining the manipulated variable u(t) based on an input difference v(t) between an estimated target value w(t) and the controlled variable θ(t); a psychological evaluator for detecting biometric information bio(t) about the human being corresponding to the controlled variable θ(t), evaluating the human being's psychology based on the biometric information bio(t), and determining a psychological output value y(t) representing the psychology; and a secondary controller for receiving a difference ε(t) between a target value r(t) of the human being's psychology and the psychological output value y(t) and determining the estimated target value w(t) based on the difference ε(t).. .
Hiroshima University

Actuator controlled variable flow area stator for flow splitting in down-hole tools

Systems and methods divide flow in a wellbore into a plurality of flow paths. A first one of the flow paths extends to a down-hole turbine that is responsive to fluid flow to provide rotational motion to an electric generator or other down-hole tool.
Halliburton Energy Services, Inc.

Modifying text appearance and display properties to improve reading efficiency

A method is disclosed where modified text, text display, and rate are performed to make reading more efficient including speed, comprehension, and retention. The text is displayed at a reader-controlled variable rate, in logical lines, emphasizing nouns and verbs vs.

Mpc with unconstrained dependent variables for kpi performance analysis

A method of key performance indicator (kpi) performance analysis. A dynamic model predictive control (mpc) process model for an industrial process including measured variables (mvs) and controlled variables (cvs) for an mpc controller is provided.
Honeywell International Inc.

Control rotary electric machine

In a control apparatus for a rotary electric machine, a first manipulation unit manipulates, as control for a predetermined first region with respect to the controlled variable, a voltage phase of a voltage vector applied to an armature winding while controlling a field current to cause a deviation between an amplitude of an induced voltage and an amplitude of a predetermined voltage to be equal to or smaller than a predetermined value, the induced voltage being generated in the armature winding based on rotation of the rotor, the predetermined voltage being applied to the armature winding; a second manipulation unit that manipulates, as control for a second region that is larger than the first region, the field current such that the controlled variable is controlled to the target value.. .
Denso Corporation

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Method and device for operating a pump

The invention relates to a method and to a device for calibrating a pump (1) provided in a pump line (6), the device comprising an actuator (2) for setting the pumping capacity of the pump (1), and a control unit (3). The device comprises a flow monitor (4) in the fuel line (6).
Avl List Gmbh

Eyewear with variable optical characteristics

Embodiments disclosed herein include eyewear that provides controlled variable light attenuation and color enhancement based on an input received from a user, a sensor and/or a signal from a control circuit. In some embodiments, the eyewear includes an optical filter system with two or more defined filter states that are adapted to improve color vision in different environments.

Poe controlled light fixtures with incorporated poe controlled variable conditioned air vents

A luminaire for lighting and for distribution of conditioned air within a space includes a housing having a lighting element, a duct opening, and at least one air vent coupled to the duct opening. The at least one air vent is configured to deliver conditioned air to the space.
Innovative Lighting, Llc

Condition-based powertrain control system

A system and approach for development of setpoints for a controller of a powertrain system. The controller may be parameterized as a function of setpoints to provide performance variables that are considered acceptable by a user or operator for current operating conditions of the engine or powertrain.
Honeywell International Inc.

Fuel cell system and control method thereof

A fuel cell system and method of controlling the fuel cell system are provided. The fuel cell system includes a fuel cell stack that is configured to receive fuel, and generate electric energy and a fuel supply valve that is configured to adjust pressure of fuel that is supplied to the fuel cell stack.
Hyundai Motor Company

Driving system and driving method, and exposure apparatus and exposure method

A synthetic controlled variable is obtained by obtaining a synthetic quantity using measurement results of a first and a second measuring instruments and corresponding gains (or transfer function) and synthesizing the synthetic quantity and one of the measurement results of the first and the second measuring instruments, respectively, via a high pass filter and a low pass filter. A feedback control system is structured that obtains a control input using a synthetic controlled variable and a desired value, and gives a plant the control input.
Nikon Corporation

Industrial system with synthetically commutated variable displacement fluid working machine

An injection moulding system, water jet cutting machine or other industrial system has a synthetically controlled variable displacement fluid working machine which outputs hydraulic fluid to one or more fluid consumers, such as rams or hydraulic motors, through hydraulically stiff fluid retaining volumes and receives hydraulic fluid back from one or more fluid consumers through the same or other said hydraulically stiff fluid retaining volumes. Individual piston cylinder assemblies can be allocated to different outputs.
Artemis Intelligent Power Limited

Steering control system

A steering control system with which a steering angle accurately follows a steering angle command value is provided. An assist command value calculation circuit calculates a first assist component based on a value obtained by adding a basic assist controlled variable with a system stabilization controlled variable.
Jtekt Corporation

Article with controllable wettability

An article with controllable wettability includes a substrate and a layer of a composite material supported on the substrate. The layer has an exposed surface and the composite material includes particles that have controllable polarization embedded fully or partially in a matrix.
The University Of Connecticut

Digitally controlled variable stiffness ski, snowboard, and boots system

A system, method and apparatus for a digitally controlled variable stiffness item of athletic equipment, such as a ski, snowboard, and boots. A core of thermally responsive metal alloy, such as nitinol is disposed within the athletic equipment.

Electric brake system

Provided is an electric brake system capable of compensating for a braking force by the whole electric brake system when functional degradation occurs in a part of the system. This system includes: a diagnosis module (24) that detects functional degradation in each of electric brake devices (db); a control calculation module (23) that estimates a controlled variable error that is a difference between an estimate of a braking force determined by a braking force estimation device (28) of an electric brake device (db) in which functional degradation is detected, and a braking force determined by the device (28) of an electric brake device (db) in which no functional degradation is detected; and a controlled variable compensating module (29) that, when the module (23) estimates the existence of the error, distributes a braking force corresponding to the error among the devices (db) other than the electric brake device in which the error exists so as to add the distributed braking force to the braking force target value of each electric brake device..
Ntn Corporation

Correction device, correction device controlling method, information processing program, and recording medium

Improvement of following performance about a target value is achieved in a control system, particularly a feedback control system. A command value correcting device corrects a current-control-cycle command value received with a feedback controller using a current-control-cycle controlled variable of a control target..
Omron Corporation

Steering control device

Provided is a steering control device that more appropriately performs a limiting function for a controlled variable having an abnormal value even if a plurality of kinds of state quantities that are used for steering control include a state quantity that does not meet a required level of reliability. The range of variation in first assist controlled variable calculated by using steering torque, a steering torque differential value, and a steering velocity, namely state quantities for which the required level of reliability is ensured, is limited by final limiting values calculated based on first to third limit maps.
Jtekt Corporation

Variable area blade turbine and conditioning flow deflectors device and method

A mechanism to provide controlled variable area blades for fluid driven tangential turbines is disclosed, where the spindle axis is perpendicular to the fluid flow, applicable in vertical axis hydraulic turbines but extensive to horizontal axis or wind turbines, with the rotor completely immersed on the flow. Each blade varying its area at selected position of the rotor turning, increasing to maximize conversion of the kinetic energy of the fluid onto mechanical rotational power of the shaft, or reducing to minimize drag moving opposed to such current.
Corporacion Andina De Fomento

Adaptive drilling with piezo-electric feed oscillator

A positive feed tool may include a motor, a power supply operably coupled to the motor to power the motor, a gear head and a spindle. The gear head may be operably coupled to the motor to be operated responsive to powering of the motor.
Apex Brands, Inc.

Coordinated and proportional grade and slope control using gain matrixes

A multiple-input multiple-output (mimo) computer control system in a heavy equipment machine is in communication with multiple sensors in order to measure deviations from a path to be followed. Sensor corrections are applied to return the heavy equipment machine to a path to be followed or to restrain the machine from deviating from the path to be followed.
Gomaco Corporation

Apparatus for air-conditioning of environments in the marine field

An apparatus for air-conditioning of watercraft and the like including: an electronically controlled variable-r.p.m. Compressor, a main gas/water condenser (5), at least one environmental heat-exchanger (3) with an electronically controlled fan (14), at least one electronically controlled expansion valve (8), and at least one first electronic control unit (4) programmed for calculating continuously a temperature deviation detected (deltat=t_ad−t_a), and as a function of the temperature deviation regulating in combination, the r.p.m.
Tmd Marine Ltd

Axial engagement-controlled variable damper systems and methods

The present disclosure provides an axial engagement-controlled variable damper comprising a rotor assembly coupled to a rotor shaft and disposed about an axis of rotation and a stator, coaxially aligned with the rotor assembly. The axial engagement-controlled variable damper may further comprise a flux sleeve, axially movable relative to the rotor assembly between at least a first position and a second position.
Goodrich Corporation

Saturation-controlled variable damper systems and methods

The present disclosure provides a stator assembly comprising a high damping core, a low damping core coaxially aligned with the high damping core, a plurality of slots defined in at least one of the high damping core and the low damping core and extending between a first axial end face and a second axial end face of the at least one of the high damping core and the low damping core, and a control winding being integrally continuous and successively wound through the plurality of slots, such that the control winding enters the plurality of slots from at least one of the first axial end face and the second axial end face. In various embodiments, the control winding is configured to receive a current..
Goodrich Corporation

Axial engagement-controlled variable damper systems and methods

The present disclosure provides an axial engagement-controlled variable damper comprising a rotor assembly coupled to a rotor shaft and disposed about an axis of rotation and a stator, coaxially aligned with the rotor assembly. The axial engagement-controlled variable damper may further comprise a flux sleeve, axially movable relative to the rotor assembly between at least a first position and a second position.
Goodrich Corporation

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Method for closing an electrical power supply circuit of an electric apparatus located in a chamber at a controlled variable pressure and related device

A method for closing an electrical power supply circuit of an electric apparatus located in a chamber at a controlled variable pressure. The method includes heating which provides energy to an element made of electrically conductive material located in the enclosure which is open to the chamber pressure; sublimation of the element made of electrically conductive material once the latter reaches a given temperature, if the pressure conditions in the chamber correspond to the conditions required for an operation of the electric apparatus under vacuum; ejection of vapour particles of the electrically conductive material which result from the sublimation; and formation of a deposit of electrically conductive material between the two electrically conductive terminals as a consequence of the ejection of the vapour particles..
Commissariat A L'energie Atomique Et Aux Energies Alternatives

Autonomous l1-adaptive controller with exact pole placement

Embodiments relate to a predictor device for controlling at least one actuating variable of a plant having at least one actuator, which can be controlled by the actuating variable, and a state with at least one controlled variable that can be detected by a sensor. The predictor has an adaptation device and an l1-adaptive control apparatus.
Airbus Defence And Space Gmbh

Digital communication interface circuit for line-pair with duty cycle imbalance compensation

A circuit (200, 300, 400, 600, 700, 800) interfacing a device (20, 30, 40, 60, 80) with a line-pair includes: a diode bridge (210) having polarity-independent input terminals coupled to the line-pair; a galvanic isolation device (230, 330) receiving a transmit signal and coupling the transmit signal to its output; a variable edge delay circuit (270, 370, 572, 574, 576) that delays rising/falling edges of the transmit signal more than falling/rising edges of the transmit signal; a voltage-controlled variable resistance element (260, 360, 460) connected across output terminals of the diode bridge; and a filter connected to a control terminal of the voltage-controlled variable resistance element. The filter includes decoupled charge and discharge paths to decouple the rise time of the transmit signal from the fall time of the transmit signal.
Philips Lighting Holding B.v.

Method for selecting operating points of a gas turbine

A method for selecting operating points of a gas turbine while taking into consideration at least one controlled variable, the operating points being defined at least by parameter combinations of manipulated variables, wherein the operating points are automatically selected on the basis of already known parameter combinations by using an interpolation method, the kriging interpolation method being used as the interpolation method.. .
Siemens Aktiengesellschaft

Balancing unit of a motor vehicle and controlling same

To reduce the complexity and the outlay involved in the development and implementation in a vehicle of systems and methods known from the prior art for operating a differential-free, clutch-controlled balancing unit having a first clutch and a second clutch, the invention provides for the first clutch and the second clutch to be controlled independently of the driving conditions, and always using the same variable controlled variable of the same value.. .
Gkn Driveline International

Layered approach to economic optimization and model-based control of paper machines and other systems

A method includes executing a control algorithm for an industrial process using a controller objective function, where the industrial process is associated with at least one controlled variable. The method also includes executing an optimization algorithm for the industrial process using an extended version of the controller objective function.
Honeywell Limited

Method for stabilizing gain of apd in medical laser receiver

The present invention provides a method for stabilizing the gain of an avalanche photodiode in a medical laser diode receiver. This method is characterized by comprising: (a) a step in which a high-voltage generation unit generates a high-voltage bias and applies same to an avalanche photodiode; (b) a step in which a temperature sensor senses the temperature of the avalanche photodiode; (c) a step in which a control unit controls a variable resistance value, which varies the voltage of the high-voltage bias, according to the value of the sensed temperature; (d) a step in which to detect if an output voltage signal is equivalent to the intensity of light received by the avalanche photodiode; and (e) a step in which a storage unit matches the sensed temperature value with the controlled variable resistance value and stores same.
Dankook University Cheonan Campus Industry Acadamic Cooperation

Method and real time model predictive control operator support in industrial process control and automation systems

A method includes obtaining measurements associated with a plurality of controlled variables (cvs) and a plurality of manipulated variables (mvs). The method also includes detecting an irregular operating condition of a cv or an mv.
Honeywell International Inc.

Monitoring system, wayside led signaling device, and monitoring a wayside led signaling device

A monitoring system for a wayside signaling device includes a light emitting diode (led) circuit with an led array, a led driver unit for driving the led array, and a mechanism for connecting and disconnecting the led circuit, and an optical light sensing circuit with a light-controlled variable resistor operably coupled to a resistor driver unit including relay functionality. The led circuit and the sensing circuit are arranged such that the light-controlled variable resistor monitors an output of the led array, and that the relay functionality triggers the mechanism to connect or disconnect the led circuit based on the output of the led array..
Siemens Industry, Inc.

Adaptive impedance matching apparatus, system and method with improved dynamic range

An embodiment of the present invention provides an apparatus, comprising' an rf matching network connected to at least one rf input port and at least one rf output port and 5 including one or more voltage or current controlled variable reactive elements; a voltage detector connected to the at least one rf output port via a variable voltage divider to determine the voltage at the at least one rf output port and provide voltage information to a controller that controls a bias driving circuit which provides voltage or current bias to the rf matching network; a variable voltage divider connected to the voltage detector and implemented using a 10 multi-pole rf switch to select one of a plurality of different resistance ratios to improve the dynamic range of the apparatus; and wherein the rf matching network is adapted to maximize rf power transferred from the at least one rf input port to the at least one rf output port by varying the voltage or current to the voltage or current controlled variable reactive elements to maximize the rf voltage at the at least one rf output port.. .
Blackberry Limited

Formulating steady-state targets using prioritized objective functions

Computer system and methods for optimally controlling the behavior of an industrial process, in accordance with plant operating goals, without requiring a complicated trial and error process. The system and methods enable configuring optimization preference and optimization priority for key manipulated variables (mvs) of the industrial process.
Aspen Technology, Inc.

Integrated coke plant automation and optimization using advanced control and optimization techniques

The present technology is generally directed to integrated control of coke ovens in a coke plant in order to optimize coking rate, product recovery, byproducts and/or unit lime consumption. Optimization objectives are achieved through controlling certain variables (called control variables) by manipulating available handles (called manipulated variables) subject to constraints and system disturbances that affect the controlled variables..
Suncoke Technology And Development Llc.

Multivariable control for power-latency management to support optimization of data centers or other systems

A method includes identifying demand for computing resources provided by multiple computing devices and identifying operating states or modes for the computing devices based on the demand using a multivariable controller. The multivariable controller is configured to determine how to alter multiple manipulated variables in order to create changes to multiple controlled variables.
Honeywell International Inc.

Arrangement and measuring and controlling the heating temperature in a semiconductor gas sensor

An arrangement is provided for controlling the heating temperature in a semiconductor gas sensor comprising a control loop, consisting of a heating resistor as automatic control system of a measurement device measuring a physical quantity representing the temperature of the heating resistor, and an actuating unit controlling a power supply of the heating resistor, and a method which utilizes the arrangement. The actuating unit includes a pulsating voltage source, having a first pulse duration, during which the heating resistor is connected to an operating voltage, and a second pulse duration, during which the heating resistor is separated from the operating voltage, whose first and/or second pulse duration can be controlled as a correcting variable, a constant current source applies a measuring current to the heating resistor during the second pulse duration and a measurement device measures the measurement voltage drop across the heating resistor, whose output is designed as a controlled variable feedback in the control loop..
Zentrum Mikroelektronik Dresden Ag

Phase controlled variable angle ultrasonic flow meter

An ultrasonic flowmeter includes a conduit for receiving a flow of a fluid and a flexible printed circuit board (fpc) including: a pair of ultrasonic transducers, wherein each transducer comprises a piezoelectric element divided into a plurality of segment electrodes and the fpc is bonded around the conduit; and a control circuit configured to sequentially activate the segment electrodes using a pulse train to cause at least one of the piezoelectric elements to emit a sonic signal. A delay time between activation of each successive segment electrode controls a phase velocity and an angle of emission of the corresponding sonic signal..

Method for conrolling at least one first drive unit of a vehicle as a function of operating states of a second drive unit of the vehicle during a switchover operation, and control device

A method for controlling at least one first drive unit of a vehicle as a function of operating states of a second drive unit of the vehicle during a switchover operation. The first drive unit is associated with a first control unit and the second drive unit s associated with a second control unit.
Continental Automotive Gmbh

Electric power steering system

An assist command value calculation circuit includes a torque shift control circuit, a phase lag compensation control circuit, a basic assist control circuit, and a phase lead compensation control circuit. A determination circuit determines whether a motor has been continuously under high load or not based on a current command value and a current limit value.
Jtekt Corporation

Controller and control method

A controller includes a control computation unit, a control computation output correction unit, and a final-control-element output upper-lower limit processing unit. The control computation unit calculates, for each control cycle, a control computation output value by performing a control computation using a controlled variable and a set point as input values.
Azbil Corporation

Controlled variable length and illumination pattern light diffusing optical fiber

An illuming device for use in medically illuminating tissue of interest within a patient generally includes a light diffusing optical fiber and an at least partially optically opaque sheath that is mounted over the fiber for selective, sliding movement along the length thereof. By sliding the sheath relative to the optical fiber after it has been inserted into a patient to illuminate a particular area of tissue, the length, size, and/or shape of the light that is exposed to the tissue can be selectively controlled.
Corning Incorporated

Method for determining a switching function for a sliding mode controller, and sliding mode controller

The disclosure relates to a method for determining a switching function for a sliding mode controller for controlling a controlled variable of a system, the switching function being selected as a function of a control deviation of the controlled variable and its time derivatives up to at least the second order and on the basis of initial control dynamics of the system, coefficients of the switching function being represented by means of poles of a closed control loop of the system, the poles each being selected as a function of the control deviation, and desired control dynamics of the system being set by shifting at least one first pole of the poles, and to such a sliding mode controller and to a use of such a controller.. .
Robert Bosch Gmbh

Dynamometer system

Provided is a dynamometer system dynamo control device that can accurately reproduce a no-load state. The dynamo control device includes controllers that are designed, using a h-infinity control or a μ-design method, such that, for a generalized plant that outputs observation output and a controlled variable from external input and from control input, the response from the input until the variable is shortened.
Meidensha Corporation

Skate blade holder tool with adjustable-size blade retention

A blade holder tool for inserting a loose skate blade into a sharpener unit for sharpening includes blade-engaging features that engage blade retention features of the skate blade, and a spacing component providing user-controlled variable spacing of the blade-engaging features to hold skate blades across a range of sizes. The tool may include an elongated tool body having a bottom portion configured to receive the skate blade, the tool body supporting the blade-engaging features and spacing component.
Velasa Sports, Inc.

Electric power steering system

Provided is an electric power steering system that achieves a more appropriate steering feel. An ecu of the electric power steering system calculates a basic assist component and a target pinion angle based on at least steering torque.
Jtekt Corporation

System and fast-capture multi-gain phase lock loop

A phase locked loop system has a voltage-controlled variable-load ring oscillator (vlco) that operates in a frequency band determined by a selected load on each stage of the ring oscillator. Each stage of the vlco has multiple load selection transistors, each coupled to a load capacitor.
Treehouse Design, Inc.

Substrate treatment device

The invention relates to a device and to a method for treating substrates, comprising a heating apparatus having a plurality of zone heating apparatuses and comprising a control apparatus, the reference variable of which is a susceptor temperature (ts) and the controlled variable of which is an actual temperature of the susceptor (7) measured by means of a temperature-measuring apparatus (10) and the manipulated variable of which is a value for the heating power (ptot) fed into the heating apparatus. A heating power distributor (12) is provided, which receives the manipulated variable (ptot) as an input variable and which provides a zone heating power (p1, p2, p3, p4, p5) for each of the zone heating apparatuses (1, 2, 3, 4, 5) as output variables, wherein the sum of the values of the zone heating powers (p1, p2, p3, p4, p5) corresponds to the manipulated variable (ptot) and the values of the zone heating powers (p1, p2, p3, p4, p5) have a specified fixed ratio among each other.
Aixtron Se

Refrigerating circuit for use in a motor vehicle

A refrigerating circuit for use in a motor vehicle has a refrigerant compressor (8) connected on the output side to a pressure line (4) and on the input side to a suction line (6). The refrigerating circuit has at least one condenser (10), at least one regulated expansion valve (14), at least one evaporator (16) and at least one inner heat exchanger (12).
Dr. Ing. H.c.f. Porsche Aktiengesellschaft

Apparatus for mitigation of adverse effects of geomagnetically induced currents on transformers

An apparatus for mitigating gic (geomagnetically induced current) effects through a fuzzy logic controlled variable resistor. Under gic conditions (or any unbalanced fault current condition), the gic or unbalanced fault current flows through the neutral of a power transformer.

Heating, ventilation, and air conditioning system controller

Heating, ventilation, and air conditioning (hvac) controllers are described herein. One method includes receiving an approximate relationship between each of a number of controlled and manipulated variables of an hvac system, designating one of the number of controlled variables as a primary controlled variable, determining operating parameters for each of the number of manipulated variables that maintain the primary controlled variable based, at least in part, on the approximate relationship between the primary controlled variable and each respective manipulated variable, and determining operating parameters for each of the number of manipulated variables that maintain each of the other controlled variables based, at least in part, on the approximate relationship between each respective other controlled variable and each respective manipulated variable and the determined operating parameters for each of the number of manipulated variables that maintain the primary controlled variable..
Honeywell International Inc.

Heating, ventilation, and air conditioning system controller

Heating, ventilation, and air conditioning (hvac) system controllers are described herein. One hvac controller includes a user interface configured to receive an indication of whether there is a positive or negative relationship between each of a number of controlled variables of an hvac system and each of a number of manipulated variables of the hvac system, a memory, and a processor configured to execute executable instructions stored in the memory to determine operating parameters for each of the number of manipulated variables, wherein the determined operating parameters are determined based, at least in part, on whether there is a positive or negative relationship between each respective controlled variable and each respective manipulated variable, and the determined operating parameters are not based on system dynamics and disturbances associated with the hvac system.
Honeywell International Inc.

Method for controlling a hydrostatic drive

A method is used to control a hydrostatic drive including a drive machine, a hydraulic pump coupled to the drive machine, and a hydraulic motor coupled to the hydraulic pump via a hydraulic working circuit. In the method, at least one of multiple manipulated variables of the hydrostatic drive is ascertained and set, in the course of a precontrol, from a specified setpoint value for at least one of the controlled variables, including a pressure in the hydraulic working circuit, a speed of the hydraulic pump, and an output variable of the hydrostatic drive.
Robert Bosch Gmbh

Electric power steering apparatus and controlling method

An electric power steering apparatus includes a control unit that calculates an assist controlled variable based on a plurality of types of state variables indicating steering statuses and controls a motor that serves as a generation source of an assist force applied to a steering mechanism of a vehicle based on the assist controlled variable. The control unit is configured to separately set limit values, which limit a change range of the assist controlled variable according to the respective state variables used to calculate the assist controlled variable, to the respective state variables, add up the limit values to generate ultimate limit value for the assist controlled variable, and perform limitation processing to limit the ultimate limit value for an assist controlled variable having a sign opposite to a sign of a steering torque that is one of the plurality of types of state variables..
Jtekt Corporation

Heat control device for an incubator for infants, incubator and the heat control of an incubator

An infant incubator heat control device (44) includes a temperature-detecting device (46) providing chamber interior and incubator heater temperature measured values (t1, t2). A first mode of operation has an interior temperature set value (r1), a temperature of the heater set value (r2) is calculated as a function of the interior temperature set value (r1) and of the chamber interior temperature measured value (t1).
Drägerwerk Ag & Co. Kgaa

Method and device for controlling power generators of a subgrid within an interconnected grid

Disclosed is a subnetwork controller (tnr) for a subnetwork (tn) within an interconnected grid (nv), which controller controls power generators (g), subnetworks or loads (l) of the subnetwork in accordance with sensor-captured internal measured variables (yi) and sensor-captured external measured variables as well as external controlled variables (vi) of the subnetwork (tn) in such a way that a dynamic behaviour of the subnetwork (tn) in relation to its adjacent subnetworks corresponds to a defined desired behaviour.. .
Siemens Aktiengesellschaft

Method for controlling an electromechanical actuator, and control device

A method and control system for controlling an electromechanical actuator (1, 2) of a brake system for motor vehicles, in which a measured actual value, of a controlled variable is intended to be set to a specified target value. A first actuator speed target value is determined on the basis of the target value and the actual value by a first controller (19,20), and wherein a manipulated variable for the electromechanical actuator (i, 2) is determined on the basis of the first actuator speed target value and a second actuator speed target value.
Continental Teves Ag & Co. Ohg

Power converter controller with analog controlled variable current circuit

A bleeder controller for controlling a magnitude of a variable current conducted by bleeder circuitry between input terminals of a device is disclosed. The magnitude of the variable current is controllable in response to a control signal.
Power Integrations, Inc.

Electric brake device

A brake device includes a control device which performs feedback control using a braking force of a linear motion mechanism as a controlled variable. The control device includes a computing unit for computing an operating quantity (voltage applied to an electric motor) for canceling out fluctuations in braking force, and a frequency detector for detecting the frequency of the operating quantity.
Ntn Corporation

Control of an internal combustion engine

An electronic control unit for an internal combustion engine configured to achieve demands concerning various kinds of functions of an internal combustion engine by coordinative control of a plurality of actuators concerning an operation of the internal combustion engine. The electronic control unit of the internal combustion engine is provided with a demand generation r level, a physical quantity mediation level, a controlled variable setting level, and a controlled variable mediation level.
Toyota Jidosha Kabushiki Kaisha

Electronic control unit of internal combustion engine and method thereof

An electronic control unit of the present invention includes: a demand generation level that generates and outputs a demand value concerning various kinds of functions; a physical quantity mediation level that aggregates and mediates the demand value for each predetermined physical quantity; and a controlled variable setting level that sets a controlled variable of the actuator based on the mediated demand value and transmits a signal in a single direction from a higher level to a lower level. A controlled variable mediation level that aggregates and mediates demand values expressed with controlled variables of the actuators set on the controlled variable setting level and a demand value transmitted from the demand generation level not through the physical quantity mediation level, together with demand values mediated by the physical quantity mediation level is provided below the controlled variable setting level..
Toyota Jidosha Kabushiki Kaisha

Variable speed drive system

An electronically controlled variable speed mechanical drive to be used in high power applications where using a direct drive motor is not feasible due to weight and size constraints. The variable speed drive components convert an externally driven fixed displacement pump into a variable displacement pump by electronically setting the pump speed to meet flow demands.

Flue having an adjustable flue gas flow unit

Known chimneys or chimney furnaces use flue gas flow units for heating buildings, said devices having displaceable or fixed obstacles for deflecting flue gas for generating flue gas turbulence. The invention relates to a device and method for transferring heat through a flue gas discharge pipe in which pivotal guide plates are inserted in the longitudinal direction of the pipe run, at which the flue gas flow is more or less deflected in a sinuous line as function of the pivot angle of the guide plates that can be adjusted during furnace operation.