47 results about "Vector control system" patented technology

The invention discloses a permanent magnet synchronous motor adaptive sliding mode speed control method based on an improved reaching law, and belongs to the field of permanent magnet synchronous motor sliding mode speed control. A power item and a variable speed regulation function of the sliding mode surface are introduced into a constant-speed switching item and an exponential reaching item of a traditional exponential reaching law respectively, a hyperbolic sine function is used for replacing a switching function, and an improved reaching law with the fast reaching and buffeting suppression characteristics is obtained; designing a speed controller of the permanent magnet synchronous motor; designing a self-adaptive sliding mode disturbance observer independent of disturbance boundary information by adopting a double-layer self-adaptive structure, estimating total disturbance of a speed control loop, and taking an output value of the observer as speed controller compensation; the controller and the observer are applied to a permanent magnet synchronous motor vector control system. The method can effectively improve the speed control response speed and the steady-state performance of the permanent magnet synchronous motor.

The invention discloses a high-efficiency and fast-response control method for a brushless non-inductive direct current motor, and the method employs a non-inductive vector control system which combines an improved rotating speed loop active-disturbance-rejection controller (ADRC) and an improved sliding-mode observer (SMO) to improve the anti-interference capability of a power system. The vector control of the brushless direct current motor at a high speed is realized by adopting an improved sliding-mode observer (SMO), and meanwhile, an active disturbance rejection controller (ADRC) is adopted by a rotating speed ring; according to the method, high-precision control is maintained, the parameter adjustment process is simplified, the implementation difficulty is reduced, the dependence on a high-precision sensor is reduced, the robustness and the anti-interference capability of the system are improved, and good stability and control precision can be maintained even under the condition that motor parameters change greatly or load fluctuation is large; the problems in the background technology are solved.

The invention provides a method for suppressing a current measurement error of a ship permanent magnet propulsion motor, and belongs to the technical field of motor drive control systems. The method comprises the following steps: establishing a ship permanent magnet propulsion motor vector control system model containing a current measurement error; constructing a target resonator with d-axis and q-axis current measurement error phase compensation based on the model; the target resonator is connected to a PI controller of a rotating speed ring in parallel, and the output of the target resonator serves as compensation of d-axis current and q-axis current disturbance of the ship permanent magnet propulsion motor. According to the method, the problem that only q-axis current harmonic can be compensated in the prior art is solved, meanwhile, a controller or a sensor does not need to be added, system redundancy is avoided, and accuracy and calculation efficiency are both achieved.

The invention belongs to the technical field of motor control, and particularly relates to a permanent magnet synchronous motor parameter identification method, which comprises the following steps of: acquiring voltage, current and speed data of a motor in two states that direct-axis current is equal to 0 and not equal to 0 in the same period as input characteristic quantities through a permanent magnet synchronous motor vector control system; synchronously collecting motor stator resistance, direct-axis inductance, quadrature-axis inductance and permanent magnet flux linkage as output characteristic quantities for training a back propagation neural network model; and after reverse neural network training is completed, motor parameter identification is completed by inputting related characteristic quantities in real time. According to the method, the training efficiency and generalization ability of the neural network model are improved, the problems that a traditional parameter identification scheme depends on high modeling precision and low identification precision are solved, and the method is suitable for parameter identification behaviors of the permanent magnet synchronous motor under various working conditions. The invention also provides a non-transitory readable recording medium storing the program of the method and a system comprising the medium, and the program can be called through a processing circuit to execute the method.

The present application relates to a kind of permanent magnet shielding motor vector control energy efficiency optimization method considering magnetic field lagging phase angle, belong to permanent magnet shielding motor control field.It is characterized by: by analyzing shield sleeve eddy current effect, the analytical expression of magnetic field lagging phase angle is derived using electromagnetic field theory;The lagging phase angle is introduced into permanent magnet flux linkage term to be corrected, and the eddy current loss of shield sleeve and stator iron loss are combined into equivalent iron loss component, and a system controllable loss model is constructed;Under the constraint of constant torque, the analytical expression of total controllable loss about direct-axis current is derived and the optimal direct-axis current given value is solved.The actual application introduces angle compensation in the coordinate transformation link of vector control system, and the optimal direct-axis current given value is sent into current regulator, the accurate decoupling of dq axis current is realized, the total loss of motor is reduced, so as to improve the overall efficiency of motor control system.

The invention discloses a dead-beat current prediction control method based on parameter adaptive online identification. The method comprises the steps of S1, mathematical modeling of a three-phase permanent magnet synchronous motor; s2, designing and simulating a vector control system based on PI control; s3, designing a dead-beat predictive current control algorithm; s4, vector control system simulation based on a dead-beat predictive current control algorithm; s5, analyzing the performance of the dead-beat predictive current control algorithm under the parameter mismatch condition; s6, a parameter identification algorithm based on model reference self-adaption; s7, performing model reference adaptive parameter identification algorithm simulation; and S8, performing parameter identification-based permanent magnet motor dead-beat predictive current control system simulation. According to the method, permanent magnet synchronous motor parameter identification based on a model reference adaptive algorithm is combined with dead-beat predictive current control, so that the stability and the interference resistance of the system are improved.

The utility model discloses a kind of torque vector control systems, including differential, the differential one side is connected with left half axle, the other side is connected with right half axle, the differential one side is equipped with transmission assembly to receive the power of vector motor output, the transmission assembly at least includes first planetary row and second planetary row sharing same connecting gear ring, the first planetary carrier of first planetary row is fixedly connected with left half axle;The second planetary carrier of second planetary row is fixedly connected with the shell of differential.The utility model has the beneficial effect mainly reflected in: the system has torque distribution function, and the radial space of double planetary row shared gear ring is smaller, by reasonable arrangement to vector motor and speed reduction mechanism, so that its application is more widely, and performance is stronger.Simultaneously, the system has torque distribution function, and energy consumption problem in yaw dynamics control and driving experience are considered;Can effectively improve the economy of car, steering stability and initiative safety.

This invention discloses a harmonic current injection active disturbance rejection control method for motors. It is a harmonic current suppression and tracking control scheme for permanent magnet synchronous motors based on an improved QRADRC. Strong disturbance suppression is achieved by embedding quasi-resonance in the ESO (Electronic Stability Oscillator), and high-precision tracking is achieved by embedding quasi-resonance in the control law. Combined with a dual-quasi-resonance coordinated tuning rule, harmonic current injection and control are completed directly within the dq synchronous rotating coordinate system without additional coordinate transformation. This invention is applicable to motor vector control systems based on the dq0 synchronous rotating coordinate system, and is particularly suitable for high-precision current control and active harmonic injection applications of surface-mounted permanent magnet synchronous motors under inverter nonlinearity, dead-zone effects, and parameter perturbations.

The invention discloses a phase-locked loop control method of a permanent magnet synchronous generator, which belongs to the technical field of motor control and wind power generation, and comprises the following steps: acquiring two-phase current and two-phase voltage under a static coordinate system, and calculating through a sliding-mode observer to obtain a shaft and an extended counter electromotive force estimated value of the shaft; designing a finite position set phase-locked loop based on Taylor series and a Newton iteration method, performing quadrant judgment and correction processing on a rotor position estimation value after primary iteration to obtain a final rotor position estimation value, performing differential operation on the final rotor position estimation value, and processing a differential result by using a low-pass filter to obtain a final rotor position estimation value; obtaining a rotating speed estimation value of a rotor, and integrating the sliding-mode observer and a finite position set phase-locked loop to a motor vector control system to realize position sensorless control; according to the phase-locked loop control method of the permanent magnet synchronous generator, the calculation burden is greatly reduced while the precision is ensured.

The invention belongs to the field of electromechanical transmission systems and control, and provides an intelligent electromechanical transmission system and an optimal control method thereof. The intelligent electromechanical transmission system has a first output form, a second output form and a third output form. The method comprises a starting process control method and an operation process control method. According to the operation process control method, engine load rate, direct current bus voltage and motor power constraint are comprehensively considered, and engine target rotating speed is generated; respectively controlling the generator and the motor by using vector control precaution based on rotor field orientation; designing a current inner loop decoupling controller of the asynchronous motor vector control system by applying a basic method of feedback linearization; and tracking the change of the load torque by using an error-based active-disturbance-rejection constant-speed control strategy to realize constant-speed control. The optimal control method is provided mainly for the electromechanical transmission requirement, the working efficiency and stability of the transmission system are improved, and stepless speed change and transmission intelligent control are achieved through electromechanical transmission.

The utility model provides a vector control system and a vehicle. The vector control system comprises a transmission system and a torque vector control system, the torque vector control system comprises a clutch group; the clutch group comprises a first clutch and a second clutch; the transmission system is connected with a right wheel through a first clutch; the transmission system is connected with a left wheel through a second clutch; the transmission system is in transmission with at least one of the pair of wheels through the clutch set. Traditional complex mechanisms such as a differential mechanism and a bilateral speed reducer are omitted, and clutches are only arranged at the left wheel end and the right wheel end respectively. By means of the design, the number of parts is remarkably reduced, and the overall weight of the system is reduced. The simplified structure directly reduces the production cost, and provides convenience for subsequent maintenance. Through mutual switching control of the clutches, the rotating speed difference between the left half shaft and the right half shaft can be rapidly adjusted, and therefore accurate distribution of torque is achieved.

The present invention belongs to the field of motor control technology, and discloses a five-phase induction motor speed sensorless vector control method, system and terminal. In the process of digitizing the full-order flux observer algorithm, the bilinear method is used to discretize the state equation of the five-phase induction motor; combining the full-order flux observer and vector control technology, a five-phase induction motor speed sensorless vector control speed regulation system is established. In view of the current domestic technical gap in the speed sensorless vector control of five-phase induction motors, the present invention establishes a five-phase induction motor speed sensorless vector control system based on the full-order flux observer and vector control technology. Experimental results show that the system has good speed regulation performance and speed identification capabilities. In addition, in order to solve the problem that the traditional Euler discretization method will produce a large discrete error, the present invention adopts a more accurate bilinear method to discretize the state equation of the five-phase induction motor, which is suitable for application scenarios with high requirements for speed regulation performance.

The application relates to a kind of twelve-phase permanent magnet motor control methods based on rotating shaft position observation, belong to motor control technical field. By equivalent twelve-phase permanent magnet synchronous motor to four three-phase control units;Design state observer based on rotating shaft for each unit to observe back electromotive force;Through phase-locked loop, the rotor position and speed signal of each unit is extracted from back electromotive force;According to master-slave control method, select one from four control units as master controller, use the rotor position and speed signal corresponding to the master controller as the final observation result of the system;At the same time, it is used as feedback signal, input to the double closed loop vector control system of twelve-phase permanent magnet synchronous motor, realize twelve-phase high-speed permanent magnet synchronous motor sensorless control. The observer based on rotating coordinate system of the application is better designed, and is more stable when low carrier ratio control.

The invention discloses a hybrid excitation motor two-phase static coordinate system position-sensorless control method and a hybrid excitation motor two-phase static coordinate system position-sensorless control system. The method comprises the following steps of: firstly, applying high-frequency square wave voltage excitation in an excitation winding, detecting generated high-frequency response current under a two-phase static coordinate system by utilizing a carrier separation mathematical method, and discretizing a detected high-frequency response current signal; then, the discrete current signals are processed through vector cross multiplication and a sign function, and rotor position and rotating speed information is obtained; and finally, substituting the real-time estimated values of the rotor position and the rotating speed into a vector control system of the hybrid excitation motor to control the hybrid excitation motor. According to the method, the precision of rotor position estimation under the zero-low-speed working condition is improved, dependence on a complex filter is not needed, the bandwidth of the system is expanded, and the control performance of the motor system is improved.

The utility model relates to an intelligent control acquisition device for a marine permanent magnet motor, which includes an X1 junction box, an X2 junction box, an X3 junction box, an X4 junction box, and a main junction box; the X1 junction box, the X2 junction box, the X3 junction box, and the X4 junction box are respectively installed on the right side surface of the main junction box by screws; the X1 junction box, the X2 junction box, and the X3 junction box are all weak current junction boxes; the X1 junction box is used for leading wires for bearing temperature measurement and water leakage alarm; the X2 junction box is used for leading wires for winding temperature measurement; the X3 junction box is for resolver wiring; the X4 junction box is a heating tape, and the X4 junction box is a strong current junction box. The utility model is easy for later maintenance and repair; effectively monitors the health status of the motor operation; combines with a vector control system to make the permanent magnet motor operate under reasonable working conditions; effectively prevents the internal windings of the motor from condensing.

The invention relates to the technical field of motor detection, in particular to a medical operation high-speed permanent magnet synchronous micromotor rotor position detection method, which comprises the following steps: acquiring the output voltage and current of an alternating-direct axis current regulator; based on the output of the quadrature-direct axis current regulator, the position error and the rotating speed error of a motor rotor are calculated respectively, the output of the quadrature axis current regulator is subjected to low-pass filtering and then integrated to obtain a decoupling rotating speed, and then the decoupling rotating speed is integrated to obtain a decoupling rotor position angle; the output of the direct-axis current regulator is subjected to low-pass filtering and then compensation solution to obtain an estimated rotor position angle, and then the estimated rotating speed can be obtained after differential. The method does not depend on a motor model, motor parameters are not needed, the speed of a motor rotor is detected from voltage output by a quadrature-direct axis current regulator of a control system with direct axis current as a zero vector, and then the position of the rotor is detected after integration.

The invention discloses a permanent magnet synchronous motor adaptive sliding mode observation method based on fuzzy logic and DSOGI-PLL, and belongs to the technical field of motor sensorless control. According to the method, aiming at the buffeting and phase lag problems of a traditional sliding mode observer, a fuzzy logic controller is adopted to dynamically adjust the sliding mode gain and the F (s) function slope coefficient, and the buffeting of the system is effectively inhibited; meanwhile, a double-second-order generalized integrator phase-locked loop is introduced to carry out orthogonal decomposition and harmonic filtering on the back electromotive force signal, a fundamental component is accurately extracted, and phase delay is reduced. The method is embedded into a permanent magnet synchronous motor vector control system and can replace a mechanical position sensor to realize high-precision rotation speed and position estimation. Simulation and experiment results show that the method has remarkable advantages in the aspects of buffeting suppression and counter electromotive force estimation precision.

The application is suitable for the technical field of motor control, and provides a PMSM sensorless control method based on ESMO and SPLL, comprising: establishing a foc vector control mathematical model of a permanent magnet synchronous motor; designing an extended sliding mode observer by regarding back electromotive force as a state variable, adopting a double power sliding mode surface and a high-order sliding mode control law with an adaptive variable speed approaching term to complete back electromotive force observation; connecting an improved SOGI module with a compensation link to filter and process the observation signal and cross-compensate two-phase back electromotive force errors, optimizing a phase discriminator and a loop filter of a phase-locked loop, and extracting rotor position and speed; connecting the outputs of the observer and the phase-locked loop to a FOC vector control system to complete sensorless control closed loop building. The application effectively suppresses the chattering problem of the traditional sliding mode observer, improves the phase discrimination accuracy and dynamic response speed under low-speed working conditions, and enhances the anti-interference ability under load mutation.

The application discloses a global finite time convergence permanent magnet synchronous motor control method based on a backstepping method framework, comprising the following steps: 1) on a MATLAB platform of an upper computer, a permanent magnet synchronous motor control system is designed based on model-based design by using MATLAB / Simulink software; 2) a hardware circuit of a permanent magnet synchronous motor vector control system is built; 3) a finite time nonlinear extended state observer NLESO is designed; and 4) under a recursive control framework of the backstepping method, a super-spiral sliding mode algorithm with a second-order sliding mode characteristic is fused, and a globally finite time stable compound controller is designed. By integrating the observer convergence and the double closed loop stability, the application effectively suppresses the 'chattering' phenomenon of the traditional sliding mode control, and significantly improves the dynamic response speed, the steady state tracking accuracy and the anti-interference robustness of the motor in the whole working condition range.

The invention discloses a phase-locked loop control method of a permanent magnet auxiliary synchronous reluctance motor, which belongs to the technical field of motor control, and comprises the following steps: constructing a nonlinear flux linkage observer to obtain estimated values of a shaft and a shaft flux linkage, designing a finite position set phase-locked loop based on an inverse quadratic interpolation method, carrying out differential operation on the estimated value of a rotor position, and carrying out phase-locked loop control on the rotor position. Processing a differential result through a low-pass filter to obtain a rotating speed estimated value of a rotor, and integrating a nonlinear flux observer and a finite position set phase-locked loop based on an inverse quadratic interpolation method into a motor vector control system to realize position sensorless control; according to the phase-locked loop control method of the permanent magnet auxiliary synchronous reluctance motor, parameter setting is not needed, the robustness is high, the dynamic performance is good, and an innovative solution is provided for high-performance motor driving.

The invention discloses a current sampling offset error online compensation method of a permanent magnet synchronous motor, and belongs to the technical field of motor control. The method comprises the following steps: S1, establishing a voltage equation of the permanent magnet synchronous motor in an alpha-beta static coordinate system, and introducing and considering the influence of the introduction of CMOE on a current sampling link into the voltage equation; s2, simultaneously establishing a voltage equation in a static coordinate system and a current sampling model considering CMOE; and S3, based on the ESO thought, estimating the CMOE as an expansion state, and compensating the CMOE to the static coordinate system so as to eliminate the influence of the CMOE on the vector control system. The method can effectively improve the precision of the vector control system, has good dynamics and robustness, and meets the requirements of the industrial production field for the vector control system of the high-performance permanent magnet synchronous motor.

The invention discloses a single main rotor-double vector slave rotor heterogeneous multi-rotor layout, and relates to the technical field of unmanned aerial vehicle aircraft design, the layout comprises a main rotor arranged in the middle of a fuselage and two vector slave rotors symmetrically arranged on the left and right sides of the main rotor; the main rotor provides main lift force, the two vector slave rotors are provided with independent vector control systems respectively, the tension directions of the vector slave rotors can be deflected independently so as to carry out attitude control of pitching and yawing, rolling control is carried out by adjusting the rotating speed in a differential mode, and meanwhile the reaction torque of the main rotor is balanced by installing a preset inclination angle. According to the layout, the aerodynamic efficiency, the cruising ability and the flight control performance of the unmanned aerial vehicle are remarkably improved through a decoupled lift force and attitude control strategy.

The present application relates to a motor parameter inversion method and related device based on a circuit breaker vector control system. The method includes: configuring the inversion operating parameters of the circuit breaker motor operating mechanism so that the motor operating mechanism is relatively stationary during the inversion process; generating a control signal according to the inversion operating parameters, and controlling the motor operating mechanism to be in a voltage dynamic equal state based on the control signal; collecting the bus voltage in the voltage dynamic equal state, and determining the actual voltage of each winding based on the bus voltage and the control signal; collecting the actual current of the three-phase winding, fitting the current curve of the motor operating mechanism during the inversion process according to the actual current, and determining the curve parameters of the current curve; constructing a functional relationship model including the motor inversion parameters, and obtaining the motor inversion parameters of the corresponding phase winding based on each set of curve parameters and each winding. Compared with the prior art, the present application does not require the addition of additional structures and circuits, is simple to operate, has high reliability, and has high accuracy in inversion results.

The application discloses a permanent magnet synchronous motor rotor position filtering and zero position calibration method, which comprises rotor position filtering and coordinate transformation vector angle calculation and rotor zero position calibration; wherein: the rotor position filtering and coordinate transformation vector angle calculation is used for filtering the rotor position and completing the coordinate transformation vector angle calculation of the vector control system; the rotor zero position calibration is used for permanent magnet synchronous motor rotor and sensor zero position deviation calibration, and the obtained rotor position is compensated. The application can make the rotor position obtained by the sensor more stable and accurate, so as to ensure the high efficiency, stability and robustness of the electric drive system.

The present invention relates to a system for vehicle motion control (100) of a vehicle with at least a steering system and one or more of a brake system (24) and a torque vectoring system, a number of sensors (11.21) for sensing at least vehicle speed or wheel speed, yaw rate and wheel angle, said vehicle motion control system comprising a Yaw Stability Control (YSC) functionality comprising an oversteer control function, wherein the YSC function is arranged to be fail-operational.

The invention relates to the field of vehicle testing, and discloses a driving and loading control method, system, medium and equipment for a reliability test bed of an electromechanical composite transmission system. Calculating the vehicle speed and the driving wheel rotating speed of the real vehicle under different test conditions, and converting the driving wheel rotating speed into the transmission system output shaft rotating speed as the rack target rotating speed; a driving demand is calculated based on the working condition vehicle speed to serve as a driving motor target torque, and a permanent magnet synchronous motor kinetic model and a vector control system are constructed to perform closed-loop control on the driving motor output torque; according to the target rotating speed of the rack and the measured actual rotating speed of the rack, a rotating speed controller is constructed to carry out closed-loop control on the dynamometer, rack simulation loading is achieved through an electric inertia simulation method, and the rack simulation road load is made to be consistent with the load borne by a real vehicle in the running process.

This invention discloses a heterogeneous multirotor layout with a single main rotor and two vector slave rotors, relating to the field of unmanned aerial vehicle (UAV) design technology. The layout includes a main rotor located in the middle of the fuselage and two vector slave rotors symmetrically arranged on the left and right sides of the main rotor. The main rotor provides the primary lift, and the two vector slave rotors are each equipped with an independent vector control system, capable of independently deflecting their thrust direction for pitch and yaw attitude control, and differentially adjusting their rotational speed for roll control. Simultaneously, a preset tilt angle is used to balance the anti-torque of the main rotor. This layout, through a decoupled lift and attitude control strategy, significantly improves the aerodynamic efficiency, endurance, and flight control performance of the UAV.

The application relates to the technical field of motor control, and discloses a permanent magnet synchronous motor control method based on K-Means optimized fuzzy RBF neural network, which initializes fuzzy RBF neural network parameters through K-Means clustering; actual output values V of a permanent magnet motor vector control system are obtained through sampling, and the actual output values V are subtracted from given values V ★ to calculate the deviation and the deviation change of the system; a fuzzy RBF neural network controller is constructed, e(k) and e c (k) of the system are taken as inputs of the fuzzy RBF neural network controller, k p , k i , k d are obtained through a four-layer network, and the outputs are input into a PID controller to obtain an output control amount iq, and current loop PID control is continuously carried out; the motor control method has obviously improved steady-state and dynamic performance, has strong robustness, and can effectively enhance the anti-interference capability of the motor.

The application discloses a permanent magnet synchronous motor speed loop control method based on a DDPG algorithm, and comprises the following steps: constructing a motor vector control system to obtain the state of the permanent magnet synchronous motor during operation; constructing a DDPG intelligent controller, which comprises an Actor network, a Critic network, a target Actor network, a target Critic network, an experience replay pool, a first optimizer and a second optimizer, training the parameters of the Actor network and the Critic network to obtain a trained Actor network; inputting the state of the permanent magnet synchronous motor into the Actor network to output a quadrature-axis reference current; and transmitting the quadrature-axis reference current to the motor vector control system to control the speed of the permanent magnet synchronous motor in a wide speed regulation range according to the quadrature-axis reference current. The application realizes the fast response and high robustness control of the target rotating speed of the permanent magnet synchronous motor under the load mutation working condition.