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|標題:||Neural net-based modeling and control of a micropositioning platform using piezoelectric actuators||作者:||Liu, V.T.
|關鍵字:||hysteresis;piezoelectric actuator;evolutionary algorithms;cross-coupling controller;piezoceramic actuators;hysteresis||Project:||Journal of Vibration and Control||期刊/報告no：:||Journal of Vibration and Control, Volume 13, Issue 3, Page(s) 309-325.||摘要:||
The paper proposes an integrated controller which combines feedforward, PID and a cross-coupling controller to achieve high accuracy for a dual-axis piezoelectric actuated platform. A Preisach model is created to numerically describe the hysteresis behavior of the piezoelectric actuators. On the basis of the Preisach model, a feedforward compensator is developed to compensate for the hysteresis nonlinearity. A PID controller is introduced to further suppress the tracking error due to the modeling inaccuracy and hence to obtain precision tracking control. Finally, a neural net-based cross-coupling control scheme is proposed to reduce the contour errors, which are very typical in dual-axis tracking control problems. The approach developed is numerically and experimentally verified with a variety of operating conditions.
|Appears in Collections:||電機工程學系所|
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