12results about "Automatic controllers" patented technology

The invention relates to a method for operating an internal combustion engine of a motor vehicle, in which a cascade control system is used. In this system, a first quantity of air, the first quantity of which is introduced into a combustion chamber of the internal combustion engine, and a second quantity of fuel, the second quantity of which is introduced into the combustion chamber of the internal combustion engine, are controlled by means of two controllers (4, 5) of two nested control loops (2, 3). For a first controller (4, 5), a first correction value is determined, which characterizes a first control deviation (RA1) that is applied to the first controller (4). For a second controller (4, 5), a second correction value is determined, which characterizes a second control deviation (RA2) that is applied to the second controller (5).From the correction values ​​of the controllers (4, 5), a common adaptation value is determined, which is stored in a storage network common to the controllers.

An injection molding condition generation system improves the quality of injection molding. The injection molding condition generation system acquires a material property value of a resin material and an injection molding condition using the first resin material based on a target value of a quality parameter related to a quality of a molded article, the first material property value, and a predetermined relational expression. The predetermined relational expression indicates a relation among the material property value of the resin material, a plurality of injection molding conditions input to an injection molding machine, and a quality parameter related to the quality of the molded article molded by the injection molding machine based on the material property value and the injection molding conditions, and is generated based on data accumulated in the memory in association with the material property value of the resin material, the injection molding conditions, and the quality parameter.

A control device may be configured to control an electrical load (e.g., an exhaust fan) for controlling an environmental characteristic (e.g., a humidity level) in a space. The control device an actuator received in an opening in a front surface of a bezel, which may comprise first and second side portions on each side of the actuator. The control device may comprise an environmental sensing circuit for sensing the environmental characteristic in the space, and a control circuit configured to control the electrical load in response to actuations of the actuator and / or the environmental sensing circuit. The bezel may comprise a ventilation portion on the first or second side portion of the front surface. The ventilation portion may have apertures extending from the front surface to a cavity in the bezel. The environmental sensing circuit may be configured to receive air from outside of the bezel via the cavity.

A method for monitoring an electric vehicle charging apparatus is provided. A charging pile that includes a power meter and a processor is used to provide a charging current to an electric vehicle through a charging connector. The power meter detects the charging current to generate an initial current value and an initial power value that correspond to an initial charging time, and a present current value and a present power value that correspond to a present time, so that the processor calculates an initial resistance value and a present resistance value of the charging connector accordingly, and then calculates an estimated present temperature value of the charging connector based on the initial resistance value and the present resistance value. The estimated present temperature value is compared with an over-temperature threshold to determine whether to reduce the charging current.

The invention provides a method for controlling a wind power plant that receive operating command requests via a distributed system comprising a plurality of subsystems each associated with a respective party capable of issuing requests. One subsystem generates a request to operate the wind power plant in accordance with a defined operating command desired by the associated party. The request is broadcast to each of the other subsystems to approve or disapprove the requests. Each subsystem broadcasts to the other subsystems if it approves the request, and each subsystem maintains a database including a record of which subsystems have approved the request. The wind power plant is controlled based on which subsystems have approved the request, where at least one subsystem other than the subsystem that generates the request needs to have approved the request before the plant implements the defined operating command.

The invention discloses a motor control device, a motor controller and a motor control method. A motor control device includes: a resolver that calculates a rotation angle of a motor on the basis of a voltage detection value from a stator winding; and a motor controller that calculates a rotation angle for control by extrapolating the rotation angle calculated by the resolver based on a time difference between a control timing of the resolver and a voltage sensing timing, and controls the motor by using the rotation angle for control.

This invention relates to the field of wastewater treatment and addresses the problem of the inability to automatically adjust the flocculant dosage according to the specific wastewater conditions. Specifically, it is a wastewater treatment dosing system applicable to wastewater flocculation separation sedimentation tanks. In this invention, data on the wastewater to be treated and external environmental interference factors are collected. The flocculant dosage is generated through dynamic model simulation. The flocculation results are then analyzed to determine if the flocculant dosage is sufficient, preventing insufficient flocculant addition. The simulation model for flocculant dosage is automatically corrected and adjusted. Simultaneously, the wastewater flocculation process is monitored, and analysis is performed to determine if excessive flocculant is added, preventing over-dosing. This achieves the goal of automatically dispensing the appropriate amount of flocculant according to wastewater treatment needs and automatically optimizing the accuracy of the flocculant dosage simulation, thereby improving the intelligence level of the wastewater treatment dosing process.

Systems and procedures for controlling the fuel supplied to the cylinders of an internal combustion engine are described. In one example, the fuel is controlled in response to an output from two different fuel control units on an external circuit. The fuel can be controlled according to the individual, separate outputs of the external circuit's control units or the combined outputs of the two different fuel control units.

In accordance with one or more embodiments herein, an arrangement for additive manufacturing by selective fusion, using an electron beam, of a three-dimensional product from a powder bed, is provided. The arrangement comprises at least one electron detecting arrangement arranged to detect powder smoke by detecting electrons which have been scattered by the electron beam hitting powder particles which levitate above the powder bed. Also provided is a method for detecting powder smoke during additive manufacturing, the method comprising: arranging at least one electron detecting arrangement in an arrangement for additive manufacturing by selective fusion, using an electron beam, of a three-dimensional product from a powder bed; detecting electrons which have been scattered by the electron beam hitting powder particles which levitate above the powder bed; and determining whether there is powder smoke based on the output from the at least one electron detecting arrangement.

This invention discloses a method, system, and storage medium for complex system state calculation and action generation based on structured constraints, belonging to the technical fields of complex system operation control, state analysis, intelligent calibration, and computer implementation. The method acquires multi-dimensional physical state input of a complex system, performs state calculation based on preset structured constraints, and obtains at least two different-dimensional state representation quantities. These state representation quantities include at least a first state representation quantity representing the degree of deviation of the current state from the target working domain and a second state representation quantity representing the evolution trend or directional relationship of the current state. Based on the state representation quantities, basic action quantities are generated, and based on the basic action quantities and action projection relationships, action output information is generated. Based on the structured constraints, constraint verification, projection correction, or output condition judgment is performed on the action output information, and the processed action output information is output. The action output information includes at least one of control quantities, state classification results, action direction suggestions, priority suggestions, and suggestion adjustment ranges. This allows the invention to cover multiple implementation paths, such as individual judgment, suggestion output, post-judgment control, and direct control, and is applicable to engines, powertrains, wind turbines, rocket vertical recovery, and other multivariable coupled and strongly nonlinear systems.

Provided is a technique for the polymerization of polyurethane. For example, one or more embodiments described herein can include synthesizing polyurethane by a polymerization reaction carried out in a flow reactor. The polymerization reaction can polymerize a diol with a diisocyanate.

The invention relates to a method for controlling an electric drive (4, 6) of a hydraulic pump (2) in a hydraulic system comprising at least one hydraulic consumer (10), wherein the electric drive is controlled by a manipulated variable and wherein the at least one hydraulic consumer (10) is supplied with hydraulic fluid by the pump (2) based on consumer requirements, comprising: determining (110) a first value (42) for the manipulated variable by means of a pressure regulator (40) that regulates a pump pressure (38) of the pump to a target pump pressure (36) determined by the consumer requirements; determining (120) a second value (52) for the manipulated variable by means of a speed controller (50) that regulates a speed (46) of the pump to a target pump speed (44) determined by the consumer requirements; determining (130) a third value (56) for the manipulated variable from the first and the second value;a determination (140) of one or more limit values ​​(82, 102) for the manipulated variable by means of respective controllers (96, 98), by which one or more limit values ​​(80, 90) of the hydraulic system are controlled to one or more limit setpoints (78, 88); a determination (150) of a control value (60) for the manipulated variable from the third value and the one or more limit values; and a control (160) of the electric drive with the control value (60).;