Active control of a diaphragm-type pneumatic vibration isolator
碩士 === 明志科技大學 === 機電工程研究所 === 99 === Since diaphragm-type pneumatic vibration isolator has nonlinear and time-varying characteristics, it is difficult to establish an accurate dynamic model for designing a model-based controller. In this thesis, a model-free functional approximation based (FA based)...
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ndltd-TW-098MIT006570182016-04-29T04:20:18Z http://ndltd.ncl.edu.tw/handle/25524640992776636159 Active control of a diaphragm-type pneumatic vibration isolator 單缸膜片式氣壓系統之主動隔振研究 Wu Kunwei 吳崑瑋 碩士 明志科技大學 機電工程研究所 99 Since diaphragm-type pneumatic vibration isolator has nonlinear and time-varying characteristics, it is difficult to establish an accurate dynamic model for designing a model-based controller. In this thesis, a model-free functional approximation based (FA based) adaptive sliding controller is integrated with an adaptive fuzzy-based compensator (AFSMC) and proposed to control the diaphragm-type pneumatic vibration isolator. The functional approximation technique is employed here to approximate the unknown time-varying function and release the model-based requirement of sliding-mode control. The update laws for the coefficients of the Fourier series functions are derived from the Lyapunov stability theory. To that end, the close-loop stability is also assured. The proposed FA+AFSMC control scheme is verified in the active control of the diaphragm-type pneumatic vibration isolator. Experimental results indicate that the control performance obtained from the proposed scheme are better than those obtained from traditional PID control or adaptive fuzzy sliding control. Liang Jinwei Chen Hungyi 梁晶煒 陳宏毅 2011 學位論文 ; thesis 70 zh-TW |
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碩士 === 明志科技大學 === 機電工程研究所 === 99 === Since diaphragm-type pneumatic vibration isolator has nonlinear and time-varying characteristics, it is difficult to establish an accurate dynamic model for designing a model-based controller. In this thesis, a model-free functional approximation based (FA based) adaptive sliding controller is integrated with an adaptive fuzzy-based compensator (AFSMC) and proposed to control the diaphragm-type pneumatic vibration isolator. The functional approximation technique is employed here to approximate the unknown time-varying function and release the model-based requirement of sliding-mode control. The update laws for the coefficients of the Fourier series functions are derived from the Lyapunov stability theory. To that end, the close-loop stability is also assured. The proposed FA+AFSMC control scheme is verified in the active control of the diaphragm-type pneumatic vibration isolator. Experimental results indicate that the control performance obtained from the proposed scheme are better than those obtained from traditional PID control or adaptive fuzzy sliding control.
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Liang Jinwei |
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Liang Jinwei Wu Kunwei 吳崑瑋 |
author |
Wu Kunwei 吳崑瑋 |
spellingShingle |
Wu Kunwei 吳崑瑋 Active control of a diaphragm-type pneumatic vibration isolator |
author_sort |
Wu Kunwei |
title |
Active control of a diaphragm-type pneumatic vibration isolator |
title_short |
Active control of a diaphragm-type pneumatic vibration isolator |
title_full |
Active control of a diaphragm-type pneumatic vibration isolator |
title_fullStr |
Active control of a diaphragm-type pneumatic vibration isolator |
title_full_unstemmed |
Active control of a diaphragm-type pneumatic vibration isolator |
title_sort |
active control of a diaphragm-type pneumatic vibration isolator |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/25524640992776636159 |
work_keys_str_mv |
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