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A study of Self-Tuning PI Speed Controller Based on Fuzzy for Permanent Magnet Linear Synchronous Motor  

Lee Chin-Ha (부산대 대학원 전기공학과)
Choi Cheol (OTIS-LG 서보 R&D팀)
Kim Cheul-U (부산대 전자전기통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.9, no.6, 2004 , pp. 602-611 More about this Journal
Abstract
Servo system has commonly adapted PI controller with fixed gains, because of its simplicity and determinative relationship among the parameters. The fixed gains PI system may be applied well to some operation conditions, but not non-linearities, complex and time variant operation conditions. For solving these problems, another conventional method, 'variable gun schedule according to speed', is published. The value of gain is determined according to the absolute value of the mover real speed. In this paper, FSTPIC(Fuzzy Self-Tuning PI Controller) is proposed based on various experiences to rapidly reduce speed error and to secure a good speed response characteristics. The effectiveness of proposed algorithms is demonstrated by comparing to two conventional gain systems via 4-quadrant operation.
Keywords
FSTPIC(Fuzzy Self-Tuning PI Controller); Variable gain schedule; K$_{}$ P/; T$_{}$ I/; K$_{}$ I/; Look Up Table;
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