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Fuzzy sliding mode control method for permanent magnet synchronous motor based on improved exponential reaching law

A permanent magnet synchronous motor, fuzzy sliding mode control technology, applied in the direction of motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problem of low robustness and poor dynamic performance of permanent magnet synchronous motor speed control system and other problems to achieve fast response, improved torque output performance, speed regulation performance, and good steady-state performance

Active Publication Date: 2022-06-07
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

In order to solve the disadvantages of poor dynamic performance and low robustness of the permanent magnet synchronous motor speed control system based on conventional reaching law variable structure sliding mode control, suppress chattering in the sliding mode control strategy, and further improve the control performance of the control system, a A Speed ​​Control Method of Sliding Mode Motor Based on Reaching Law of Variable Exponential Coefficient

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  • Fuzzy sliding mode control method for permanent magnet synchronous motor based on improved exponential reaching law
  • Fuzzy sliding mode control method for permanent magnet synchronous motor based on improved exponential reaching law
  • Fuzzy sliding mode control method for permanent magnet synchronous motor based on improved exponential reaching law

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[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific examples:

[0043] A fuzzy sliding mode control method of permanent magnet synchronous motor based on the improved exponential reaching law of the present invention, as shown in the appendix figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 As shown, the permanent magnet synchronous motor adopts a double closed-loop control system of speed and current, in which the three-phase stator currents are transformed by coordinates to obtain the d and q-axis currents i in the rotating coordinate system d , i q , the position sensor provides real-time speed and position signal for the system, this system adopts i d =0 vector control, which is the same as the measured d-axis current i d Do the difference to get the input of the d-axis PI current regulator, and the q-axis given current is obtained from the output of the sliding mode s...

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Abstract

A fuzzy sliding mode control method for permanent magnet synchronous motors based on an improved exponential reaching law, and a fuzzy sliding mode motor speed control method based on a variable exponential coefficient reaching law, which is the basis of the conventional exponential reaching law in sliding mode control The system state norm is introduced above, so that the speed of the moving point approaching the sliding mode surface in the sliding motion stage and the chattering amplitude in the sliding mode stage are related to the system state variables, so that the approaching speed is associated with the system state change, and combined with fuzzy control to suppress Chattering generated by sliding mode control, the improved control method effectively improves the response speed and accuracy of the system, weakens system chattering, has strong robustness to uncertain disturbances, and greatly improves the performance of the speed control system. performance, so that the motor has better dynamic and static performance.

Description

technical field [0001] The invention relates to a motor control strategy, in particular to a fuzzy sliding mode control strategy of a permanent magnet synchronous motor. Background technique [0002] Patent No.: CN201510410455.5, Name of Invention: A sliding mode control strategy of permanent magnet synchronous motor based on reaching law, discloses a sliding mode control strategy of hydraulic synchronous motor based on reaching law, and the control strategy of permanent magnet synchronous motor The speed and current double closed-loop control is adopted, the current loop adopts the PI controller, and the speed loop adopts the sliding mode control based on the reaching law; The deviation from the feedback rotor angular velocity is used as the input quantity, and the q-axis current given value i is output through the sliding mode control quantity. q . The invention solves the problems of slow approaching speed and large steady-state chattering of the traditional approaching...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/05H02P21/28H02P27/12
CPCH02P21/0007H02P21/05H02P21/28H02P27/12Y02P80/10
Inventor 刘宗锋王庆洲杨凯利谢凤芹王树凤杨其玺姜宁谢凯洋韩铖李俊龙王宝云董金慧谷亦杰高歌延忠磊汪卫东宗明吉刘建波
Owner SHANDONG UNIV OF SCI & TECH
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