17 results about "Control algorithm" patented technology

A method for starting a cold or frozen fuel cell stack as efficiently and quickly as possible in a vehicle application is based upon a state of charge of a first power source such as a high voltage battery. Power flow between the first power source and fuel cell system is coordinated in conjunction with a specific load schedule and parallel control algorithms to minimize the start time required and optimize system warm-up.

The invention discloses an electric automobile and an electric current loop control method and device for a permanent magnet synchronous motor of the electric automobile. The method includes the following steps that traveling working condition information of the electric automobile, the d-axis given current and the q-axis given current of the permanent magnet synchronous motor and the d-axis actual current and the q-axis actual current of the permanent magnet synchronous motor are obtained; according to traveling working condition information and a preset neural network algorithm, a d-axis proportionality coefficient, a d-axis integral coefficient, a q-axis proportionality coefficient, a q-axis integral coefficient and the PWM switching frequency are calculated; and the d-axis voltage is calculated according to the d-axis given current, the d-axis actual current, the d-axis proportionality coefficient, the d-axis integral coefficient and a d-axis current PI control algorithm, the q-axis voltage is calculated according to the q-axis given current, the q-axis actual current, the q-axis proportionality coefficient, the q-axis integral coefficient and a q-axis current PI control algorithm, and therefore vector control can be conducted on the permanent magnet synchronous motor according to the d-axis voltage, the q-axis voltage and the PWM switching frequency. Therefore, through setting of control parameters matched with the traveling working condition, the better rapid respond capacity is achieved, and overshooting is reduced.

The invention provides a device applied in gradient temperature control. The device is composed of a first temperature control module, a second temperature control module, a control module, a transmission device or a rotation device, a controlled target and a detection module. The method and device of the invention has the advantage of good expandability, different temperature control modules can be alternately used at different time points, the temperature control module in the off-working state adopts the idle time to realize the next target temperature value, sudden changes do not needed, and the service life can be prolonged; the temperature control module in the working state does not undergo the temperature rising/falling process, so the sample module temperature rising/falling rate can be improved, the overshoot phenomenon can be avoided, and the complex control algorithm does not needed. The temperature control is more flexible, the effective temperature control time of the controlled target can be shortened, the temperature change rate of the controlled target can be improved, and the application in gradient temperature control can be realized. Less temperature control modules are adopted, and different temperature control modules are used to control the temperature of the controlled target in different time periods through the idea of 'time division multiplex access' so as to realize a plurality of target gradient temperatures.

The invention belongs to the technical field of traffic safety, and particularly relates to an automatic emergency brake control method. However, a current automatic brake control technology cannot give consideration to both early warning time and a safety distance. The invention provides the automatic emergency brake control method. The method comprises the steps of formulating an automatic emergency brake control strategy, wherein the automatic emergency brake control strategy includes an automatic emergency brake control algorithm, a hierarchical control system and a braking force distribution sub-strategy; judging collision danger according to front target motion information and own vehicle motion information, and giving early warning and braking operations; adopting a collision time algorithm in an early warning period, and adopting a safe distance algorithm in a to-be-braked period; sequentially transmitting control signals to a first-layer controller and a second-layer controller so that a control effect and expectation are kept consistent as much as possible; and generating a braking force through the braking force distribution sub-strategy so that automatic braking is achieved. And the safety is ensured, and meanwhile, over-urgent braking is avoided.

The invention relates to a motion simulator, which comprises a base, a platform which moves relative to the base and an actuator with controllable length, wherein the actuator is connected with the base and supports the platform, and the size of the base and the platform and the variable size of the actuator determine a movable operation area of the platform. The motion simulator also comprises a controller and a washout controller, wherein the controller is suitable for outputting motion cueing algorithm according to the required state, and the washout controller is provided with washout adaptation output. The washout controller converts a request platform state to a control platform state to maintain the platform stay in the operation area through the washout adaptation. The length of the actuator is controlled by the control platform state through the motion conversion, and the washout adaption is calculated by utilizing model prediction control algorithm.

A method of synchronizing the timing of a plurality of physically coupled print engines using a small delta time increment. According to the first mode of practice, the second electrophotographic module, designated as E2, is started at a slower operating speed than its normal run speed. The PI control algorithm that controls the motor speed will then allow the speed of E2 to reach its nominal speed.

The invention belongs to the technical field of traffic control, and provides a coordination control method for multiple MFD sub-area boundaries based on a random distributed control algorithm. The problem about the uneven distribution of traffic resources in the morning and evening peak hours is solved. The traffic control method comprises the following steps of: S1, modeling and collecting data;S2, estimating the vehicle number probability distribution; S3, establishing a basis function representation model of a vehicle number probability distribution density function; S4, establishing a nonlinear prediction model between the input variable and the first n-1 weight vectors; and S5, solving the output of the control quantity. The output control is the green-time-rate matrix of traffic lights of each area boundary, and the number of vehicles in each area is adjusted by changing the duration of the traffic lights at the area boundaries. According to the coordination control method forthe multiple MFD sub-area boundaries based on the random distributed control algorithm, the problem of unreasonable distribution of the vehicles on urban road network can be minimized, and the utilization efficiency of the urban road network is improved.

The invention discloses a separated double-cylinder magnetorheological damper. The damper comprises a first piston cylinder and a second piston cylinder which are arranged in mutual angular communication, the first piston cylinder comprises a piston inner cylinder and a piston outer cylinder which are coaxially arranged, and a magnetorheological fluid circulation channel is formed among the pistoninner cylinder, the piston outer cylinder and the second piston cylinder; a piston rod assembly capable of reciprocating in the axial direction of the piston inner cylinder is arranged in the pistoninner cylinder, a first magnetorheological fluid adjusting mechanism is fixedly arranged at the bottom of the piston inner cylinder, and a second magnetorheological fluid adjusting mechanism is arranged in the second piston cylinder; and the first magnetorheological fluid adjusting mechanism and the second magnetorheological fluid adjusting mechanism are provided with magnetorheological fluid channels capable of supplying magnetorheological fluid to form different flow circulation loops. According to the technical scheme, the damper solves the problems that a passive vibration damping device is difficult to adaptively adjust the limit of the damping force according to working conditions and the control algorithm of the magnetorheological damper is complex, so that independent adjustment ofthe compression force and the restoring force of the magnetorheological damper is realized.

The invention relates to an operation monitoring system configuration monitoring page generation method, so as to solve the problem that an operation monitoring system configuration monitoring page obtained by the existing generation method cannot meet the requirements of industrial control system hardware changes. The method comprises particular steps that: 1) a monitoring page is built and a page parameter is defined; 2) the built monitoring page is judged whether to be a policy control page, if yes, step 3 is carried out, and if not, step 2 is carried out; 3) a control algorithm module is added to the policy control page; 4) data configuration is carried out; 5) need of new controls is judged, if the new controls are judged to be in need, step 6 is carried out, and if not, step 7 is carried out; 6) properties of the new controls are set; and 7) completion of the configuration monitoring page is judged, if the configuration monitoring page is completed, the completed configuration monitoring page is saved, and if not, step 1 is carried out. The method of the invention is used for remotely monitoring automation control engineering.

The invention discloses a three-stage synchronous motor rotor position estimation method based on a direct decoupling mode. A main exciter of a three-stage synchronous motor uses single-phase alternating current excitation with constant frequency, and a second harmonic wave generated by a rotating rectifier as a high-frequency signal is indirectly injected into an excitation winding of a main generator, a second-order generalized integrator is used for extracting a high-frequency response signal and an orthogonal signal thereof from current loop output controlled by starting of the main generator, high-frequency sine and cosine signals extracted from a stator side of a main exciter are combined, a decoupling signal synchronous with the high-frequency response signal is generated through analytical operation, a heterodyne method is combined for modulation, and a rotor position angle of the three-stage synchronous motor is estimated. According to the rotor position estimation method provided by the invention, the decoupling signal synchronous with the high-frequency response signal can be accurately generated, the calculation amount is small, implementation is easy, the complexity of a motor control algorithm can be effectively reduced, and the accuracy of the obtained position estimation angle is relatively high.

The invention belongs to the field of aviation permanent magnet synchronous motor control systems, and discloses an AD2S1210-based aviation permanent magnet motor rotor position angle redundancy control system and method. The space vector control FOC algorithm unit is used for generating six paths of PWM (Pulse Width Modulation) waves to drive the three-phase bridge type inversion module to be switched on and switched off by collecting armature current, rotor position angle and rotating speed information of the permanent magnet synchronous motor and adopting a rotating speed and current double-closed-loop control strategy, so that the permanent magnet synchronous motor is controlled to reach a target rotating speed or torque; the AD2S1210 rotary transformer decoding chip is used for collecting rotor position angle information and rotating speed information of a rotary transformer coaxially installed on the permanent magnet synchronous motor. The rotor position angle information and the rotating speed information are decoded and then sent to the position angle redundancy control algorithm unit; and the position angle redundancy control algorithm unit is used for judging the received rotor position angle information, outputting a correct position angle signal to the space vector control FOC algorithm unit, converting the received rotating speed information and outputting the converted rotating speed information to the space vector control FOC algorithm unit.

The invention provides a control device and a washing machine. The control device comprises a circuit board, a control panel, a frequency conversion chip and a driving module, wherein the control panel comprises a display control module arranged on the circuit board and a control switch connected with the display control module, and the display control module is used for sending an operation instruction to the frequency conversion chip according to the operation state of the control switch; the frequency conversion chip is arranged on the circuit board and is used for receiving and storing a motor control algorithm and a washing machine control program and generating a corresponding motor frequency conversion signal and a control instruction according to the operation instruction; and thedriving module is arranged on the circuit board and is used for driving a motor according to the motor frequency conversion signal. By applying the technical scheme provided by the invention, the motor frequency conversion signal and the control instruction are directly generated by the frequency conversion chip, so that the communication process of mutual interaction between a main control chip and the frequency conversion chip in the prior art is reduced, the control delay is reduced, the control efficiency is improved, the production cost is reduced, and the competitiveness of the product is finally improved.

The invention discloses a method for quickly generating a programmable logic control function block code, which comprises the following steps of: establishing a mathematical model, and compiling a corresponding performance function based on Simulink in Matlab software; creating the mathematical model into a subsystem, and then carrying out subsystem parameter configuration; carrying out system compatibility detection on the mathematical model, and building a simulation model of the controlled object on the basis of passing the detection; according to the simulation model, using simulation of Simulink to obtain an optimal solution of a control algorithm; according to a controlled object controller development environment, a programmable logic control function block code is generated from a control algorithm; and then the code is imported into a controller development environment of the controlled object, and software and hardware debugging is carried out until the actual requirements and functions of the controlled object are realized. According to the technical scheme provided by the invention, a reference can be provided for compiling a complex algorithm of the programmable logic controller based on a powerful computing power and a flexible programming mode of the Matlab, and the system design and debugging time is shortened.