具有ERF之智慧型結構的區間第二型模糊振動控制

Interval Type-2 Fuzzy Vibration Control of a ERF Embedded Smart Structure

劉穎(Ying Liu)

指導教授 ： 林志哲

國立臺北科技大學/機電學院/自動化科技研究所/碩士(2013年)

摘要

本研究以電流變液三明治樑為吸振器並結合於懸臂樑及平板之減振控制，控制方面主要探討Type-1模糊控制與Interval Type-2模糊控制進行比較。首先以模擬控制四分之一車之數學模型驗證Interval Type-2模糊控制之可行性，實驗以三明治電流變液樑做可調式吸振器。電流變液是一種智慧型材料，由不導電流體與介電懸浮微粒組成，在極板間施加電場後微粒會產生鏈結現象，使三明治電流變液樑之剛性與阻尼產生改變，利用電流變液隨電場大小改變阻尼之特性，將其設計成可調式吸振器結合主結構，進而利用模糊控制調整吸振器電場大小來降低主結構不同模態之振動。
藉由電流變液可調變之特性，加入結構作為可調變之吸振器，經由實驗得出專家資料庫，並使用自調變方法與傳統資料庫之兩種模糊控制法，進行實驗與測試。最後進行Type-1模糊控制與Interval Type-2模糊控制之實驗比較，結果顯示Interval Type-2模糊具有較佳的減振效果。

關鍵字

電流變液 ； 第一型模糊控制 ； 區間第二型模糊控制 ； 可調變吸振器

並列摘要

The main objective of this article is to present the semi-active vibration control using an electro-rheological fluid embedded sandwich beams for a cantilever beam and plate. First, we focus on the compassion between the Type-1 fuzzy control and Interval Type-2 fuzzy control. The Interval type-2 fuzzy control is used to improve the modeling uncertainties for this ERF embedded shock absorber. Second, the self-tuning vibration controllers using Type-1 and Interval Type-2 fuzzy law are implemented to the shock absorber system.
ER fluid is a smart material, which cause the suspended particles polarize and connect each other to form chain. The stiffness and damping coefficients of the ER fluid can be changed in 10 micro seconds; therefore, ERF is suitable to become the material embedded in the tunable vibration absorber to become a smart absorber. The electric field is controlled by a CRIO embedded system to implement the real application. For the ERF smart material embedded structure, the fuzzy control law depends on the experimental expert database and the proposed self-tuning strategy. Based on the resulting performance, Internal Type-2 fuzzy is better than the traditional Type-1 fuzzy control for this vibration control system.

並列關鍵字

Electro-rheological fluid ； Type-1 Fuzzy control ； Interval Type-2 Fuzzy control ； Tunable vibration absorber

參考文獻

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