一种永磁同步电机电流传感器故障容错控制算法

打开文本图片集

DOI：10.15938/j. emc.2025.08.012

中图分类号：TM351 文献标志码：A 文章编号：1007-449X（2025）08-0129-11

Fault-tolerant control for current sensor faults in permanent magnet synchronous motor

HUANG Gang1， ZHANG Yuhan²， JIA Lin²， LI Xiangfei²， ZHAO Kaihui 2 （20 （1. College of Railway Transportation，Hunan University of Technology，Zhuzhou 412OO7，China; 2.College of Electrical and Information Engineering，Hunan Universityof Technology，Zhuzhou 412Oo7，China）

Abstract ：Permanent magnet synchronous motor drive system has a wide range of applications in industry. However，factors such as vibration shock，environmental changes and equipment aging easily lead to motor current sensor failure，which inevitably reduces the system control accuracy. A current sensor fault tolerant control strategy based on an improved equivalent input disturbance （EID）method was presented. Firstly，a system model containing current sensor faults was established，a linear filter was introduced to transform the sensor faults into equivalent actuator faults of the augmented system，and the system model was described by the EID of its input.Secondly，the EID of the system was estimated byan improved sliding mode observer. Finally，the observer gains were automatically adjusted using intellgent fuzzy logic rules to improve the estimation accuracy of the EID，and the estimated value was compensated to the control input to reduce the effect of the fault on the output.Simulation and experimental results show that the presented method effectively suppresses the effct of current sensor faults and improves the control accuracy of the motor.

Keywords：permanent magnet synchronous motor； sensor faults；equivalent input disturbance； slidingmode observer;fault-tolerant control

0引言

永磁同步电机（permanent magnet synchronousmotor，PMSM）由于功率密度高、维护方便、效率高等优点，被广泛应用在电动汽车，航空航天等领域[1-2]。（剩余13504字）