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  • 學位論文

混成形狀記憶材料吸振器之適應滑動模式控制

Adaptive Sliding Mode Control of Tunable Hybrid Shape Memory Material for Vibration Attenuation

指導教授 : 蕭俊祥
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摘要


本研究利用形狀記憶材料(shape memory material)之半主動式混成可調變吸振器(tunable vibration absorber),量測在不同溫度控制下之動態頻率響應特性。將混成吸振器裝置在主系統懸臂樑上,運用了適應性滑動控制理論,再搭配類神經演算法訓練其數學模型,以回饋方式調變控制吸振器之加熱與冷卻,改變吸振器之剛性與阻尼,藉此降低結構系統在激振下之振幅並比較其減振效果。藉由適應性滑動模式控制,調整吸振器自然頻率以迴避系統共振發生,建立具有適應性與強健性之減振系統。

並列摘要


In this study, we use the shape memory material to construct a tunable vibration absorber and to measure its dynamic frequency response characteristics in different temperature setting. Attaching the tunable vibration absorber to the main system of a cantilever beam, we apply adaptive sliding mode control to change its stiffness and damping ratio by heating/cooling the vibration absorber. In addition, a neural network is trained to model the inverse dynamic behavior of the tunable vibration absorber. Therefore, an adaptive and robust vibration suppression method can be obtained by using adaptive sliding mode control with a neural network to tune the natural frequency of the absorber to avoid system resonance.

參考文獻


[7]陳建彰,可調變混成形狀記憶材料吸振器用於結構之減振控制,碩士論文,國立臺北科技大學機電整合研究所,台北,2010。
[15]張英杰,具邊界未知時便不確定性之非線性系統的適應性控制:函數估測法,博士論文,國立臺北科技大學機電整合研究所,台北,2011。
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[5]K.A.Williams,G.T.Chiu,and R.J.Bernhard,"Dynamic modeling of a shape memory alloy adaptive tuned vibration absorber," Journal of Sound and Vibration 280,pp.211-234,2005.
[6]K.A.Williams,G.T.Chiu,and R.J.Bernhard,"Nonlinear control of a shape memory alloy adaptive tuned vibration absorber,"Journal of Sound and Vibration 280,pp.1131-1155, 2005.

被引用紀錄


黃鉦傑(2014)。以MFC致動器作撓性結構之振動控制〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2014.00590

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