Tracking Position Control of AC Servo Motor Using Enhanced Iterative Learning Control Strategy
نویسندگان
چکیده
–A permanent magnet two phase AC servo motor is widely used for high performance position control applications. Nevertheless with the presence of nonlinearities, and the input is periodic, conventional type controller is not sufficient to provide satisfactory time-varying trajectory position control. In order to improve the tracking performance for periodic reference trajectory, this article proposed the control scheme consisting of a linear conventional position controller together with a plug-in Enhanced Iterative Learning Control strategy (EILCS). The proposed controller is implemented in an AC servo motor and the simulation runs are carried out for a periodic reference tracking. The simple Iterative learning Control Strategy (ILCS) and conventional PD controller are taken for comparative studies. The performance measures of the above said controllers are analyzed in terms of tracking error and the results confirm the supremacy of EILCS controller. A robustness of the proposed control strategy is also tested. Keywords––ILCS, ZPETC, PD controller
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