Adaptive Control of a Vibration Absorber/Isolator by Using a Plant Disturbance Canceler

振動吸收／隔離器之適應性控制－用受控體干擾抵消器

蕭俊祥(Jin-Siang Shaw)

《中華民國振動與噪音工程學會論文集》 1998 (1998/05) Pp. 1-7

https://doi.org/10.30028/CSSVANNUAL.199805.0001

摘要

本文發展－受控體干擾抵消法並應用於一受到正弦波干擾之線性系統以作振動吸收或隔離．此受控體干擾抵消器被設計成可持續適應的提供一抵消力予系統以消除完全或大量的系統振動量。此抵消器含有受控體模擬器及反受控體模型，其形式採用線性適應形有限脈衝響應(FIR)濾波器。系統的脈衝響應與反受控體之反向性質可用來得到這些濾波器好的初始權重值。數值分析例子及以磁縮致動器作主動式振動隔離器的實驗結果顯示此受控體干擾抵消器之正當性與有效性。

並列摘要

In the paper an adaptive plant disturbance canceling scheme is developed and applied to a linear system for vibration absorption or isolation, when the system is subjected to a sinusoidal disturbance. The plant disturbance canceler is designed and adapted continually to provide a negating force to the system, thus eliminating considerably, if not totally, vibrational amplitude of the disturbed system. The canceler consists of a plant emulator and an inverse plant, which are in the forms of linear adaptive finite impulse response (FIR) filters. Impulse response of the system and inverse property of the inverse plant are used to obtain good initial weights for the adaptive filters. Numerical examples are presented and experimental results by using a magnetostrictive actuator as an active vibration isolator are included to demonstrate validity and effectiveness of the plant disturbance canceler.