基于改进超螺旋滑模观测器的永磁同步电机无位置传感器控制

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中图分类号：TM341 文献标志码：A

Sensorless PMSM control based on enhanced super-twisting sliding-mode observer

DU Feihu LIN Xinnan

（1.Anhui Engineering Research Center of Vehicle Display Integrated Systems，Wuhu ，China; 2. Joint Discipline Key Laboratory of Touch Display Materials and Devices in Anhui Province，Wuhu ， China；3. School of Electrical Engineering，Anhui Polytechnic University，Wuhu 241OOo，China）

Abstract： To mitigate chattering-induced observation inaccuracy in the super-twisting sliding-mode observer（STSMO），a super-twisting algorithm with linear terms observer （STLT） is proposed. The observed back electromotive force is filtered through a complex coeffcient filter（CCF），processed byan enhanced quadrature phase-locked loop（PLL）to derive rotor position and speed.An improved exponential reaching lawbased speed control strategy accelerates convergence whilesuppressing chatering.Simulations demonstrate that the CCF + STLT observer reduces steady-state speed estimation error to 2.2r/min and limits rotor angle error within O.O2 rad，enhancing sensorless control precision for permanent magnet synchronous motors.The improved sliding mode controller（SMC）shortens speed regulation time during startup and transients without observable chattering. The enhanced PLL resolves position estimation inaccuracies during motor reversal encountered by conventional PLLs.

Key words： permanent magnet synchronous motor； super-twisting algorithm with linear terms observer; complex coefficient filter；enhanced phase-locked loop；improved sliding mode controller

近年来，无位置传感器控制策略在永磁同步电机（permanent magnet synchronousmotor，PMSM）领域的应用研究已成为学术界与工业界共同聚焦的科研热点。（剩余8056字）