基于增强型自适应超螺旋滑模观测器的永磁同步电机控制策略

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关键词：永磁同步电机；无传感器控制；滑模观测器；超螺旋算法；抖振抑制；转子位置估计DOI：10.15938/j.emc.2025.06.001中图分类号：TM341;TP273 文献标志码：A 文章编号：1007-449X（2025）06-0001-11

Control strategy of permanent magnet synchronous motor based on enhanced adaptive super-twisting sliding mode observer

SONG Yusheng1， ZHUO Senqing²， LI Fashun²， WANG Xuan²GUO Changxing'， SHEN Chuanwen1（1.School of Electrical Engineering，Xi'an Jiaotong University，Xi’an 71Oo49，China;2.AUX Air Conditioner Co.，Ltd.，Ningbo 315191，China）

Abstract：In response to the chattering issue caused by the discontinuity of the sign function in sliding mode observers （SMO） for permanent magnet synchronous motors （PMSM），and aiming to reduce the complexity introduced by the low-passfilter （LPF）and phase compensation stages，an enhanced adaptive super-twisting sliding mode observer （E-ASTSMO） was proposed for sensorless control. A second-order non-linear function with continuous smoothness and adjustable boundary layer was employed to replace the switching function in super twisting sliding mode observer （STSMO），thereby improving the system’s continuity，effectively suppressing torque ripple，and reducing inherent sliding mode oscilations. A sliding mode coeficient adaptable to the rotor speed was designed，which enhances both low and high-speed domains for back-electromotive force estimation，enabling precise rotor position estimation across a wider speed range，consequently reducing the speed error and rotor position estimation error. Comparative simulations and experiments between the E-ASTSMO and traditional SMO were conducted. Results demonstrate that the E-ASTSMO exhibits superior dynamic performance，steady-state rotor position estimation， and parameter robustness， effectively enhancing the sensorless control performance of PMSM.

Keywords： permanent magnet synchronous motor; sensorless control; sliding mode observer; super-twisting algorithm；chattering suppression；rotor position estimation

0引言

随着全球能源危机的日益严峻，风力发电和新能源电动汽车等领域呈现出蓬勃发展的趋势。（剩余13381字）