An Improved Feedforward FIR Vibration Controller

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (2) : 107-110.

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An Improved Feedforward FIR Vibration Controller

LIU Qiang1, Wang Xin-wei1, CHEN Ren-wen1 , Liu Lin2

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Abstract

The advantages and disadvantages of Finite Impulse Response (FIR) filter and Infinite Impulse Response (IIR) filters were discussed in this paper, aiming at the disadvantages, some improvements on FIR filter were made using orthonormal basis functions. The improved filter has both advantages of FIR and IIR filters. Then, the feedforward control algorithm based on the improved filter was designed. Finally, simulation analysis and vertical tail experimental verification for the new algorithm were given. The results demonstrated that the feedforward control algorithm in this paper has good performances such as fast convergence and robustness, so it is feasible to practical engineering application.

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filter / orthonormal basis functions / construction / improvement / feedforward control 

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LIU Qiang;Wang Xin-wei;CHEN Ren-wen;Liu Lin. An Improved Feedforward FIR Vibration Controller [J]. Journal of Vibration and Shock, 2009, 28(2): 107-110