Discrete-time mode switching control with application to a PMSM position servo system

被引：18
作者：
Cheng, Guoyang [1 ]
Peng, Kemao [2 ]
Chen, Ben M. [3 ]
Lee, Tong H. [3 ]
机构：
[1] Fuzhou Univ, Coll Elect Engn & Automat, Fujian 350108, Peoples R China
[2] Natl Univ Singapore, Temasek Labs, Singapore 117508, Singapore
[3] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
来源：
MECHATRONICS | 2013年 / 23卷 / 08期
关键词：
Discrete time systems; Mode switching control; Servo systems; Permanent magnet synchronous motor; (PMSM); Observer; Nonlinearities; NONLINEAR FEEDBACK-CONTROL; MAGNET SYNCHRONOUS MOTOR; HARD-DISK DRIVES; INPUT SATURATION; SPEED CONTROLLER; LINEAR-SYSTEMS; DESIGN; PERFORMANCE; IMPROVEMENT;
D O I：
10.1016/j.mechatronics.2013.10.007
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a mode switching control (MSC) scheme in discrete-time domain for fast and precise set-point tracking in servo systems subject to control saturation and unknown disturbance. The basic idea is to combine the proximate time-optimal servomechanism (PTOS) and the composite nonlinear feedback (CNF) control, using the output position as the only measurable information for feedback. The PTOS is responsible for fast targeting in servo systems when the tracking error is large, and once the system trajectory enters into some specified region, the CNF will take over the control to ensure a smooth settling without compromising the fast transient performance. A reduced-order extended state observer is adopted to estimate the speed signal for feedback and the disturbance for compensation. The asymptotical stability of the proposed MSC scheme is analyzed and the switching conditions are provided. Simulation and experimental results on a permanent magnet synchronous motor (PMSM) servo system verify that the proposed control scheme is effective in improving the tracking performance for a wide range of target set-points. (C) 2013 Elsevier Ltd. All rights reserved.
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收藏
页码：1191 / 1201
页数：11
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