Output-Feedback Sliding Mode Control for Permanent Magnet Synchronous Motor Servo System Subject to Unmatched Disturbances
نویسندگان
چکیده
This paper aims to investigate the speed regulation problem for permanent magnet synchronous motor (PMSM) servo systems subject unknown load torque disturbances. The proposed method utilizes sliding mode control (SMC), invariant manifold theory, and disturbance observation technique. In PMSM systems, torques will affect performance a large extent, which is unmatched. addition, compared with full-state measurement, output-feedback framework easy implement reduces sensor costs. However, it difficult handle unmatched unmeasured states simultaneously. To this end, specifically combines theory puts forward an rejection method. key idea that in transformed into matched one by taking advantage of manifold, different from existing results. transformation maintains most dynamics system design, improves accuracy. extended state observer designed estimate current lumped simultaneously; then, SMC introducing estimations. Besides, switching gain controller can change estimation errors adaptively, chattering reduces. Simulation results on validate effectiveness strategy.
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ژورنال
عنوان ژورنال: Mathematical Problems in Engineering
سال: 2021
ISSN: ['1026-7077', '1563-5147', '1024-123X']
DOI: https://doi.org/10.1155/2021/6642840