Calibration and compensation of cogging effect in a permanent magnet linear motor

被引:29
作者
Mu, Hai-Hua [1 ,2 ]
Zhou, Yun-Fei [1 ]
Wen, Xin [1 ]
Zhou, Yan-Hong [2 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Coll Comp Sci & Technol, Wuhan 430074, Hubei, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Cogging compensation force; Permanent magnet linear motor; Calibration; Compensation; DETENT FORCE; REDUCTION; MINIMIZATION; RIPPLE;
D O I
10.1016/j.mechatronics.2008.12.004
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The cogging force significantly deteriorates positioning accuracy and tracking accuracy in the direct-drive system with a permanent magnet linear motor (PMLM) that has widely applied in electromechanical manufacturing industries. At present, the optimization design of motor construction and adequate control strategies are main measures to overcome the cogging force of PMLM. This paper proposes an experimental method with iterative process to calibrate the cogging compensation force that is used to counteract the cogging force effect. A compensation approach using linear interpolation is presented to make a real time feedforward compensation for the cogging force. The calibration of the cogging compensation force and the compensation of the cogging force are alternately executed. The experiments obtain gradually accurate cogging compensation force. The tracking errors of the motion system are compared with and without cogging force compensation. The results show that the positioning accuracy and tracking accuracy are improved greatly by applying the cogging compensation with the calibrated cogging compensation force. This demonstrates the effectiveness and feasibility of the proposed methods. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:577 / 585
页数:9
相关论文
共 17 条
[1]  
BODIKA N, 1999, IEEE P AFR S AFR, P893
[2]  
BRAEMBUSSCHE PV, 1996, MECHATRONICS, V6, P507
[3]  
CRUISE RJ, 1999, IEEE AFRICON, P623
[4]   Minimization of cogging force in a linear permanent magnet motor [J].
Hor, PJ ;
Zhu, ZQ ;
Howe, D ;
Rees-Jones, J .
IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (05) :3544-3547
[6]   Methods of detent force reduction in linear synchronous motors [J].
Jeans, CG ;
Cruise, RJ ;
Landy, CF .
IEMDC'99 - IEEE INTERNATIONAL ELECTRIC MACHINES AND DRIVES CONFERENCE, PROCEEDINGS, 1999, :437-439
[7]  
Kim JH, 2002, PCC-OSAKA 2002: PROCEEDINGS OF THE POWER CONVERSION CONFERENCE-OSAKA 2002, VOLS I - III, P37, DOI 10.1109/PCC.2002.998509
[8]  
LAMPAERT V, 2002, P ADV MECH SYST WORK
[9]   Design of thrust ripple minimization by equivalent magnetizing current considering slot effect [J].
Lee, DY ;
Kim, GT .
IEEE TRANSACTIONS ON MAGNETICS, 2006, 42 (04) :1367-1370
[10]   REDUCTION OF COGGING TORQUE IN PERMANENT-MAGNET MOTORS [J].
LI, TZ ;
SLEMON, G .
IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (06) :2901-2903