Abstract
AbstractThis paper presents an adaptive sliding mode speed control design procedure for robust stabilization and disturbance rejection of the synchronous reluctance motor (SynRM) drive system. In general, the conventional sliding mode control design method is assumed that the upper boundary of parameter variations and external disturbances is known and the sign function is used. Therefore, it causes high frequency chattering and high gain phenomenon. In this paper, we proposed an adaptive sliding mode control of the SynRM speed drive system to avoid the above drawbacks. This method utilizes Lyapunov function candidate to guarantee the convergence and track the speed command of the SynRM drive system asymptotically. The estimator of parameter variations and external disturbances is designed to estimate the unknown uncertainty values in real‐time. This is different from conventional adaptive sliding mode control to estimate the unknown uncertainty upper boundary. Finally, we employ the experiments to validate the proposed method. Copyright © 2009 John Wiley & Sons, Ltd.
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