An Evaluation of Active Vibration Control Effectiveness for the Use of Accelerometers and PVDF Sensors

應用加速規與壓電薄膜感應器在主動振動控制效果之評估

王柏村(Bor-Tsuen Wang)

《中華民國振動與噪音工程學會論文集》 1993 (1993/06) Pp. 167-176

https://doi.org/10.30028/CSSVANNUAL.199306.0167

摘要

本篇論文探討樑之主動控制分析，應用壓電材料為致動器，以加速規及壓電薄膜為感測器，並比較兩種感測器之控制效果。系統為一簡支樑，簡協點力為干擾源，壓電材料黏著於樑上作為控制源，加速規及壓電薄膜分別作誤差感應器置於樑上感測樑之反應。建立相對應於感測器之成本函數，將此成本函數最小化以求得壓電致動器之最佳輸入電壓，探討誤差感測器位置之影響，並作振動能量之頻譜分析，以評估控制效果。在主動結構控制系統之設計，必須了解不同感測器之控制情形，本論文特別引導了包含均佈型致動器與感測器之智慧材料結構系統的設計。

並列摘要

This paper presents the theoretical analysis of active beam vibration control with the use of accelerometers and PVDF sensors in conjunction with piezoelectric actuators and compares the control effectiveness of the two types of error sensors. A simply-supported beam is considered as the plant. A harmonic point force acts as a disturbance input, and a piezoelectric element bonded to the beam serves as a control actuator. Both accelerometers and PVDF sensors that directly measure the beam responses were individually applied as error sensors. The cost function corresponding to the type of sensors is constructed. The cost function is then to be minimized so as to obtain the optimal input voltages to the piezoelectric actuators. The influence of the location of error sensors on the beam was studied. The vibrating energy spectrum analysis was also performed to evaluate the control effectiveness. An understanding of the control mechanism of various types of sensors is inherent in the design of active structural vibration control system. In particular, this study explores the insight design of intelligent material structures systems which contain actuators and sensors in the sense of distributed.

並列關鍵字

active vibration control ； piezoelectric ； PVDF