109results about "Internal feedback arrangements" patented technology

A control system for a direct current (DC) microgrid is described. The control system includes a DC bus with a positive bus line and a negative bus line, DC battery circuits with a positive coupler connected to the positive bus line and a negative coupler connected to the negative bus line, switches including a control input terminal located in each DC battery circuit, a distributed generator circuit connected to the DC bus, a constant load power circuit connected to the DC bus, a computing device connected to each control input terminal, the DC bus, the distributed generator circuit and the constant load power circuit. The computing device includes an electric circuitry, a memory, and at least one processor to determine a DC bus voltage, determine the SoC of the DC battery circuits, generate PWM signals that control the DC bus voltage, and balance the SoC of the DC battery circuits.

The invention relates to a system and a method for quickly adjusting the pressure of a process chamber based on a small valve and pump array. The system is provided with a micro baffle, so that accurate and rapid gas flow regulation and control are realized. The system controller compensates the non-uniformity caused by the design limitation of the to-be-processed substrate and the process system by adjusting the current of the motor, thereby ensuring the improvement of the uniformity of the substrate in the semiconductor manufacturing process.

A steer by wire system for a vehicle which comprising a hand wheel, a steering gear that is attached to at least one steered road wheel, and at least one actuator that is connected to the hand wheel or the steering gear for the vehicle to apply to torque to the hand wheel or steering gear, the steer by wire system including a control circuit comprising a first PID Controller which receives at an input a set point signal and provides as an output a control signal that is used to control the motor, the controller being arranged in a closed loop with the motor and configured to minimise an error value indicative of the difference between the demanded behaviour of the motor as indicated by the set point signal and the actual behaviour of the motor, and a neural network which has an input layer of neurons, at least one hidden layer of neurons, and an output layer comprising at least one output neuron, in which the neural network comprises a feedforward neural network that receives at the input layer of input neurons the demand signal, the drive signal output from the controller and the error value, and in which the neural network is configured to determine one or more of the P gain, I gain and D gain terms used by the PID controller, and further in which the neural network receives as a feedforward term at least one additional discrete environmental variable.

The invention belongs to the technical field of flow measurement and control, and discloses a laminar flow mass flow control system and method based on feed-forward compensation and cascade control. In the system, a laminar flow element is provided with a low-voltage side detection port and a high-voltage side detection port; the low-pressure side detection port is connected with the low-pressure ends of the pressure sensor and the differential pressure sensor, and the high-pressure side detection port is connected with the high-pressure end of the differential pressure sensor; the laminar flow element is connected with the regulating valve; the output end of the pressure sensor is connected with the input end of the feedforward compensation module; the output end of the A / D converter is connected with the input end of the main controller and the input end of the auxiliary controller; the output end of the main controller is connected with the input end of the auxiliary controller. The output end of the feed-forward compensation module is connected with the control end of the regulating valve; the output end of the auxiliary controller is connected with the control end of the adjusting valve through the D / A converter. The feed-forward compensation and cascade control technology is adopted, the pressure feed-forward compensation module and the differential pressure pair control loop are additionally arranged, and the problem that the flow precision of a control system is not accurate due to sudden change of fluid pressure is solved.

A multiplatform communication and control system and method is disclosed. The system comprises one or more switches configured to be activated by a user. Each switch comprises user input devices to detect an input signal. The system further comprises a wearable user interface device comprising at least one haptic transducer, and a controller communicatively coupled to the switches and the wearable device. The transducer provides haptic stimulation to the wearable device. The controller detects at least one input signal and determines one or more output signals for the input signal. The controller assigns the first option to a first haptic signal and the second option to a second haptic signal. The controller provides the option as a haptic signal to the user. The controller is further configured to detect a volitional user input corresponding to the option selected by the user and communicates the option selected.

Certain embodiments provide a vacuum generation system with an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.

The invention relates to a system (30) for controlling an actuator (TS) comprising a plurality of redundant servo devices (FC-1, FC-2, FC-3) and producing values of the same magnitude (Δ1, Δ2 and Δ3) from the same set point (Gsp) and the same measurement data (Gs1, Gs2, Gs3), the redundant servo devices (FC-1, FC-2, FC-3) furthermore being in mutual communication (B) so that each redundant servo device (FC-1, FC-2, FC-3) accesses, by reading, the last values of the variable (Δ1, Δ2, Δ3) produced by the redundant servo devices and implements a method for correcting the respective productions thereof by coupling. The invention thus prevents any divergence of these variables (Δ1, Δ2, Δ3). Such a system (30) may equip a vehicle with a load consisting of a driver, a passenger and / or goods or freight and comprising one or more actuators controlled in this way.

A system for test running of equipment using a digital twin object is presented and the digital twin object may include: a virtual model operating unit configured to operate at least one equipment in a virtual world according to at least one control value; a virtual model control unit configured to set at least one control value for operation of at least one equipment in the virtual world and transmit the at least one control value to the virtual model operation unit and receive at least one feedback on the at least one control value from the virtual model operation unit; and an automatic correction logic calculation unit configured to calculate at least one correction value for a virtual model control program based on the at least one feedback on the at least one control value and transmit the at least one correction value to the virtual model control unit.

To limit an operating speed of an operating part of a work vehicle by an operator simply performing an operation such as selecting a level according to the operator's skill or content of work from a selection screen, thereby enabling even an operator who is inexperienced in operating the work vehicle to operate the work vehicle with ease.SOLUTION: An operation control system for a work vehicle comprises a control device 34 having a hydraulic pump control unit 343 that controls a hydraulic pump based on a level selected by an operator from n levels (n is an integer of 2 or more). The hydraulic pump control unit 343 has operation amount / current value correspondence data in which an operation amount of a control lever and a current value are associated for each of the n levels. Then, a current value corresponding to the current operation amount of the control lever is obtained from the operation amount / current value correspondence data corresponding to the level selected by the operator, and an amount of pressurized oil discharged by the hydraulic pump is controlled based on the obtained current value.SELECTED DRAWING: Figure 2

The present invention relates to a system (30) for controlling actuators (TS) comprising a plurality of redundant servo units (FC-1, FC-2, FC-3) generating values ​​of the same magnitude (Δ1, Δ2, Δ3) from the same setpoint (Gsp) and the same measurement data (Gs1, Gs2, Gs3), the redundant servo units (FC-1, FC-2, FC-3) further communicating with each other (B) so that each redundant servo unit (FC-1, FC-2, FC-3) has access by reading the most recent values ​​of the variables (Δ1, Δ2, Δ3) generated by the redundant servo unit and implements a method for correcting each generated value by combining them. Thus, the present invention prevents discrepancies between these variables (Δ1, Δ2, Δ3). Such a system (30) may be equipped in a vehicle having a driver, passengers, and / or a load consisting of goods or cargo, and having one or more actuators controlled in this manner.

A camera module, according to one embodiment of the present invention, comprises: a first housing comprising a fixed lens; a second housing coupled to the first housing; an actuator disposed in the second housing; a coil and a driving magnet for moving the actuator in an optical axis direction; a first guide magnet arranged at the actuator; and a second guide magnet disposed in the second housing and facing the first guide magnet.

The invention provides a control device which performs feedback control on a control object through a plurality of physical quantities. When a physical quantity for feedback control is switched, a target value of the switched physical quantity is calculated using the switched inverse transfer function.

To provide systems and methods for measuring the temperature of a glass tube during glass tube conversion.SOLUTION: A system for producing articles from a glass tube includes a converter having a base with a plurality of processing stations and also having a turret moveable relative to the base. The turret indexes a plurality of holders for holding the glass tubes successively through the processing stations. The system further includes a thermal imaging system that includes a thermal imager coupled to the turret for movement with the turret. The thermal imaging system may also include a mirror coupled to the thermal imager and positioned to reflect infrared light from one of the holders to the thermal imager. The thermal imaging system may measure one or more characteristics of the glass tube during the conversion process. Processes for controlling the converter using the thermal imaging system to measure one or more process variables are also disclosed.SELECTED DRAWING: Figure 1

Aspects of the present disclosure relate generally to systems, apparatuses, devices, and methods for use in the implementation and / or operation of quantum information processing (QIP) systems, and more particularly, to closed-loop control and calibration in quantum information processing systems.

The present disclosure provides a feedback controller and method for controlling the operation of a device at different control steps. The feedback controller includes at least one processor and a memory storing instructions that, when executed by the at least one processor, cause the feedback controller to collect a measurement indicating the state of the device at a control step for the control step and recursively execute a parameterized probabilistic solver on a control input to an actuator that operates the device until an end condition is met to generate a control input for the control step. The feedback controller is further configured to control an actuator that operates the device based on the generated control input.

The invention relates to a system for controlling an actuator comprising a plurality of redundant servo devices and producing values of the same magnitude from the same set point and the same measurement data, the redundant servo devices furthermore being in mutual communication so that each redundant servo device accesses, by reading, the last values of the variable produced by the redundant servo devices and implements a method for correcting the respective productions thereof by coupling. The invention thus prevents any divergence of these variables. Such a system may equip a vehicle with a load consisting of a driver, a passenger and / or goods or freight and comprising one or more actuators controlled in this way.

The present disclosure provides a feedback controller and method for controlling an operation of a device at different control steps. The feedback controller comprises at least one processor, and the memory having instructions stored thereon that, when executed by the at least one processor, causes the feedback controller, for a control step, to collect a measurement indicative of a state of the device at the control step, and execute, recursively until a termination condition is met, a probabilistic solver parameterized on a control input to an actuator operating the device to produce a control input for the control step. The feedback controller is further configured to control the actuator operating the device based on the produced control input.

A system includes a non-transitory computer-readable medium configured to store a mapping between a set of subapertures and a plurality of adjustable optical elements. The system includes a user interface module configured to store properties of the set of subapertures and selectively update the mapping in response to user input. The system includes a command generation module configured to generate element commands for controlling the plurality of adjustable optical elements based on the properties of the set of subapertures. Generating an element command for a first element of the plurality of adjustable optical elements includes identifying an applicable subaperture for the first element, generating an initial command for the first element, and outputting the element command for the first element based on the initial command.

A heating device (100) comprises: a heater (10) for heating an item (1) to be heated; a temperature detection unit (20) for detecting the temperature of the item (1); and a temperature adjustment unit (30) for controlling the heater (10) on the basis of a target temperature and the detected value of the temperature detection unit (20) so that the temperature of the item (1) reaches the target temperature. The heating device (100) determines, as a system gain change rate, the rate of change from the initial value of a system gain determined as a ratio of a temperature increase value of the item (1) with respect to electric power inputted to the heater (10), and determines the rate of change in the heat-retaining properties of the item (1) using the system gain change rate.

An apparatus and methods are provided for a portable mass airflow (MAF) training module configured to simulate an air intake into an internal combustion engine. An in-line blower draws an airflow through an air filter by way of a first air duct and a second air duct. A throttle assembly is coupled between the first air duct and the second air duct. The throttle assembly includes a throttle plate that may be rotated to regulate the airflow. The power output of the in-line blower is variable to simulate the air intake of various sizes of the internal combustion engine. A MAF sensor and a duct velocity sensor are configured to provide airflow information. The portable MAF training module enables a practitioner to select a desired throttle setting and observe a resultant mass airflow through the portable MAF training module that is measured by the MAF sensor.

Certain embodiments provide a vacuum generation system having an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control an operating range of supply air pressure provided to the vacuum generator. By controlling the operating range of supply air pressure, the vacuum generation system is able to avoid entering a decreasing region or non-monotonic region of the vacuum generator.

A cross-coupling control method for moving beam of gantry machine tool is disclosed, which relates to the technical field of CNC machine tool control. The cross-coupling control method includes: Step 1: establishing a crossbeam dynamics model considering a ram on the crossbeam, and at the same time simplifying the model for an observer design; step 2: realizing a PID control parameter adjustment of motors at both ends in accordance with a method of parameter tuning of a unilateral servo control system; using a servo system with the same control parameters to jointly drive the crossbeam up and down, realizing the synchronous control and realizing PID control parameter tuning for both end motors. The disclosure not only reduces the synchronization error caused by the torsion of the crossbeam, but also solves the synchronization error caused by the asymmetric load on both sides, and improves the system robustness and stability.

The present disclosure relates to a system for semiconductor manufacturing, designed for rapid chamber pressure modulation through an array of small valves and pumps. The system incorporates micro shutters to achieve precise and rapid gas flow regulation. A system controller adjusts motor currents to compensate for nonuniformities resulting from incoming substrates and design constraints within the process system, thereby ensuring improved substrate uniformity during semiconductor manufacturing processes.

An apparatus and methods are provided for a portable mass airflow (MAF) training module configured to simulate an air intake into an internal combustion engine. An in-line blower draws an airflow through an air filter by way of a first air duct and a second air duct. A throttle assembly is coupled between the first air duct and the second air duct. The throttle assembly includes a throttle plate that may be rotated to regulate the airflow. The power output of the in-line blower is variable to simulate the air intake of various sizes of the internal combustion engine. A MAF sensor and a duct velocity sensor are configured to provide airflow information. The portable MAF training module enables a practitioner to select a desired throttle setting and observe a resultant mass airflow through the portable MAF training module that is measured by the MAF sensor.

Even when a delay time varies, stable control can be performed without using a clock function. A control device (10) configured to perform feedback control by transmitting a control signal to a target device (20) based on a physical quantity of the target device (20) measured by a sensor (30) and a command value includes: a receiver (13) configured to receive the physical quantity to which a transmission sequence number incremented for each control cycle is added in a sensor driver (35); a buffer unit (14) configured to hold an array of a number of elements determined based on a maximum value of a number of delay periods; a control unit (11) configured to generate the control signal based on the physical quantity and the command value; and a transmitter (12) configured to transmit the control signal to the target device (20). The control unit (11) increments a reception sequence number for each control cycle, stores the physical quantity at a storage position of an array determined based on the transmission sequence number and the reception sequence number, and generates the control signal based on the physical quantity stored in a storage position for control, and the command value.

A web services platform includes a data collector and a timeseries service. The data collector is configured to collect feedback samples provided by one or more sensors of a building management system and generate one or more feedback timeseries including a plurality of the feedback samples. The timeseries service is configured to identify a feedback control workflow that uses the feedback timeseries as an input and defines one or more processing operations to be applied to the feedback samples of the feedback timeseries, perform the one or more processing operations defined by the feedback control workflow to generate a control signal timeseries including a set of control signal samples, and provide a control signal including at least one of the control signal samples or the control signal timeseries as an output to controllable building equipment of the building management system that operate using the control signal as an input.

According to one embodiment, a method, computer system, and computer program product for smoothing one or more surfaces of a 3D-printed object (302) in reduced gravity is provided. The present invention may include positioning one or more radiative heating elements (108) to evenly heat one or more surfaces of a 3D-printed object (302) based on a shape of the 3D-printed object; determining, for at least one of the one or more radiative heating elements (108), a desired heat output necessary to melt the outermost layers of the one or more surfaces; and pulsing the one or more radiative heating elements (108) to melt the one or more surfaces, wherein the duration and frequency of the pulsing is configured to achieve the desired heat output.

The invention relates to a system for controlling an actuator comprising a plurality of redundant servo devices and producing values of the same magnitude from the same set point and the same measurement data, the redundant servo devices furthermore being in mutual communication so that each redundant servo device accesses, by reading, the last values of the variable produced by the redundant servo devices and implements a method for correcting the respective productions thereof by coupling. The invention thus prevents any divergence of these variables. Such a system may equip a vehicle with a load consisting of a driver, a passenger and / or goods or freight and comprising one or more actuators controlled in this way.