壓電致動器與感測器之分析與研究

Modeling and Analysis of Piezoelectric Actuator and Sensor

施敏升(Min-Sheng Shin)

指導教授 ： 丁鏞

中原大學/工學院/機械工程研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200359

摘要

本文針對應用壓電陶瓷原理之致動器及感測器之振動模態作一深入之研究。在致動器方面，本文建立了bimorph壓電致動器之靜、動態理論分析，並將之引入整個振動式輸送裝置中。對於被輸送物與輸送裝置之運動軌跡，也加以模擬分析，建立被輸送物體之運動模式，設計所需振動頻率與振幅，以期能達到最佳之輸送效率。系統承載能力之限制，也是輸送裝置是否能達到其輸送效率之重要因素，故本研究也有加以討論。最後配合實驗驗證實體機構，實際製作提升工作頻率的機構，大幅改善其輸送速度、安全性及精密度。
在感測器方面，本文也以理論分析建立振動式陀螺儀之相關運動方程式，討論其角速度與共振頻率間之關係，並加上模擬驗證。振動陀螺儀首重驅動與偵測頻率相近，如此才能有較好的靈敏度，但在諸多研究報告可發現此一重點掌控未如預期之理想，本文所研製之方樑陀螺儀以控制方樑結構，使其輸出與輸入之頻率幾乎一致，故其靈敏度良好。

關鍵字

感測器 ； 致動器 ； 壓電陶瓷

並列摘要

This paper is an advance research about the actuator and sensor both driven by piezoelectric principle. For the actuator, this paper built series of theoretical model of piezoelectric bimorph actuator in both static and dynamic states and applied that theoretical model in the vibration system of parts feeder. We also simulation and analysis about the motion path of parts. The motion of parts has also been built theoretically to design the necessary vibration frequency and amplitudes. We hope to get the best transferring efficiency. The load capacity of the system is one of the important reasons to effect transferring efficiency. So the load capacity is one of the subjects in this paper. Finally, we test the real parts feeder. We can get a better transferring rate, safety, and precision when the parts feeder has higher operating frequency.
For the sensor, this paper built series of theoretical model of vibration gyroscope. And research the relation about the angular speed with resonant frequency. The most important character of vibration gyroscope is its frequency of drive and detect should be quite close. That’s can get better sensitivity. However, you may not find it in many research reports. The vibration beam gyroscope which research by this paper, it’s frequency of input and output almost the same. So we can get the gyroscope has better sensitivity.

並列關鍵字

sersor ； actuator ； piezoelectric

參考文獻

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