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Gpc‐Based Self‐Tuning PI Controller for Speed Servo System of PMSLM
Author(s) -
Lu Shaowu,
Tang Xiaoqi,
Song Bao,
Zheng Shiqi
Publication year - 2013
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.664
Subject(s) - control theory (sociology) , pid controller , controller (irrigation) , servo , servo control , electronic speed control , servomechanism , servomotor , computer science , control engineering , engineering , control (management) , temperature control , agronomy , electrical engineering , artificial intelligence , biology
In this paper, a generalized predictive control ( GPC )‐based two degrees of freedom (2 DOF ) proportional integral ( PI ) controller is proposed for the speed servo system of a permanent magnet synchronous linear motor ( PMSLM ). In this new approach, based on a dynamic model of a servo system, a simplified and high‐performance GPC supplies a 2 DOF PI controller with suitable control parameters, according to the varied operating conditions. In previous studies, GPC ‐based proportional integral derivative ( PID ) controllers have been designed using a step‐type or ramp‐type reference input. In our work, however, the speed command for PMSLM usually is required to be a trapezium‐type signal because of the limited travel range. Hence, control performance of a speed servo system using a GPC ‐based 2 DOF PI controller is enhanced for tracking a trapezium‐type command. The validity and usefulness of the proposed controller are verified through simulation and experiments.