Three-axis vibration control based on drive spectrum modified iterative control algorithm

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (3) : 85-90.

WANG Wei, CHEN Zhangwei, LUAN Qiangli

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Abstract

Through analyzing a three-axis vibration test system, the multi-input multi-output (MIMO) power spectrum emersion control algorithm was studied. frequency response function (FRF) estimation method was used to identify the system. Aiming at that the system’s frequency response matrix was rectangular and had singular points, the singular value truncation method was adopted to ensure the stability of the algorithm, the iterative control algorithm was adopted to modify drive spectrum and improve the accuracy of vibration control. Three-axis vibration tests were conducted with a three-axis vibration table and a MIMO vibration controller integrating the above algorithm. Results showed that the modified iterative control algorithm based on FRF estimation method has a good accuracy and an engineering practicability for the repetition of power spectrum.

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three-axis vibration / singular value truncation / drive spectrum / modified iterative control

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WANG Wei, CHEN Zhangwei, LUAN Qiangli. Three-axis vibration control based on drive spectrum modified iterative control algorithm[J]. Journal of Vibration and Shock, 2018, 37(3): 85-90

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