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    題名: Discrete sliding-mode tracking control of high-displacement piezoelectric actuator systems
    作者: Hwang, Chih-Lyang;Chen, Yung-Ming
    貢獻者: 淡江大學電機工程學系
    日期: 2004-12
    上傳時間: 2013-05-31 11:45:53 (UTC+8)
    出版者: Fairfield: ASME International
    摘要: We consider the modeling and control of a high-displacement piezoelectric actuator system (HDPAS). An HDPAS includes a multilayer LVPZT bender actuator (MLBA) and a low-pass filter. The MLBA is subject to hysteresis, bending modes, measurement noise, and external disturbance. Because the spillover associated with a reduced-order model of the MLBA has been known to have the potential to cause the instability of the closed-loop system, a low-pass filter is applied to reduce its effect. To obtain an acceptable model for the HDPAS, a band-limited input and its corresponding output are fed into a recursive least-squares parameter estimation scheme. The resulting model is then used for a controller design, which includes three features. First, a dead-beat to its filtered switching surface is achieved. Second, the H norm of the sensitivity function between the filtered switching surface and the output disturbance is simultaneously minimized to attenuate the effect of output disturbance. Third, a switching control based on Lyapunov redesign is used to further improve the tracking accuracy. To demonstrate the effectiveness of the proposed control, the experimental results of the HDPAS by using the proposed control are compared with those by a proportional integral differential (PID) control.
    關聯: ASME, Journal of Dynamic Systems, Measurement, and Control 126(4), pp.721-731
    DOI: 10.1115/1.1849244
    顯示於類別:[電機工程學系暨研究所] 期刊論文


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