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A Novel Utilization Method of the Predicted Current in the High Performance PI Current Controller with a Control time delay  

Lee, Jin-Woo (두원공과대학 메카트로닉스과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.11, no.5, 2006 , pp. 426-430 More about this Journal
Abstract
This paper deals with a novel utilization method of the predicted current in the high performance PI current controller with a control time delay. The inevitable error of the predicted current in the linear servo drive using a permanent magnet linear synchronous motor is analyzed and a modified cross-coupling decoupling synchronous frame PI current controller is proposed in order to improve the current control response under both the control time delay and the inevitable current prediction error. Simulation and experimental results show that the proposed current controller has an improved current control performance under both the control time delay and the inevitable current prediction error in the servo drive system.
Keywords
PI current controller; current prediction error; control time delay; permanent magnet; linear motor;
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