臺灣博碩士論文加值系統

如何有效控制大型撓性結構系統的振動問題一直是大家研究的目標，近年
來更有許多學者將壓電材料運用到此方面的探討．本文中將壓電疊層與複
材結構體結合，透過均佈壓電感測器及制動器的作用，達到結構系統的辨
識及控制目的．一方面均佈壓電感測器可藉由正壓電效應來反應結構的振
動並產生輸出電壓，另一方面制動器亦可藉由逆壓電效應產生控制力或力
矩達到控制之目的．對於含壓電感應器及制動器之薄板有限元素設計，本
文採用(Hwang and Park,1993)的想法將壓電與複材分析分開處理，即壓
電效應可在薄板分析後再進行．藉由此一重大假設，在不影響準確性條件
下，將可大幅降低程式之執行時間，並透過理論及有限元素法的學習真正
做到控制的目的．

It has always been the target to control the vibration of large
and flexible structural systems efficiently.In this thesis, we
try to identify and control the composite structure through the
aids of distributed piezoelectric sensors and actuators .The
distributed piezoelectric sensors can respond to structural
oscillation and generate output voltages due to the direct
piezoelectric effect. On the other hand, the actuators can
induce forces/moments and control the system due to the
converse piezoelectric effect. Following the idea of Hwang and
Park (1993), a new finite element is designed for the analysis
of composite laminated thin plates containing piezoelectric
sensors and actuators. In this design, the piezoelectric
effects are studied after the pure mechanical analysis of the
thin composite laminates. Thus,vasts of computer time will be
saved and accuracy can still be preserved.