Synthesis of reference signal in adaptive feedback controller for structure vibration suppression

S. M. Yang, G. J. Sheu, C. C. Li

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

Adaptive control has been known to be desirable to accommodate the system parameter variations and adapt to operational requirements in smart (intelligent) structures. Conventional feedforward controller requires both the reference sensor to measure the disturbance and the error sensor to measure the residual vibration; however, the reference sensor measurement may be impractical because the disturbance is often not known a priori in structural vibration. This study presents an adaptive feedback controller design in which the reference signal is synthesized by the error sensor measurement and the system dynamics identification, which is a prerequisite also in adaptive feedforward controller design. The infinite impulse response (IIR) adaptive filter for system identification and the finite impulse response (FIR) adaptive filter for feedback controller are implemented on digital signal processor for effective on-line vibration suppression. Experimental results show that the controller performance is strongly influenced by the accuracy of system identification. The controller achieves broadband attenuation and remains robust under parameter variations.

原文English
頁(從 - 到)727-734
頁數8
期刊Journal of Intelligent Material Systems and Structures
19
發行號6
DOIs
出版狀態Published - 2008 六月

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 機械工業

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