Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)
- Volume 30B Issue 11
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- Pages.93-101
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- 1993
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- 1016-135X(pISSN)
The Model-Following Robust Controller Design for the Vector-Controlled Induction Motor
벡터제어 유도전동기의 모델추종 견실제어기 설계
Abstract
The transfer function of vector-controlled induction motor is represented along with both unstructured and structured uncertainty such as the error of rotor time constant and current ripple. The low-pass-filter behavior of a magnetizing inductance gets rid of unstructured uncertainty in the transfer function. The robust controller to compensate variation of the transfer function is designed using simple P-I linear controllers. The coefficients of speed PI controller are determined from an overshoot and a rising time of system and the coefficients of model-following PI controller are obtained using the solution of Riccati equation of LQR control in the state space equation of the error system. Experimental results with the DSP-based model-following robust controller are shown a good robustness against the structured uncertainty of the motor.
Keywords