Experiment study on the active vibration control using H&infin; method based on ERA identification model

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (2) : 72-76.

Experiment study on the active vibration control using H∞ method based on ERA identification model

SHAO Minqiang,CHEN Weidong,SHE Chongxi

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Abstract

The H∞ robust control on a rear-sting wind tunnel model was experimentally studied. Due to that the model is suffering from external disturbance,an Eigensystem Realization Algorithm(ERA) was used for model identification. In order to obtain a stable and robust system,a H∞ hybrid sensitivity optimization controller was designed to suppress the vibration of first two modes of the structure. The results of experiments indicate that the controller based on ERA model identification method is effective for vibration suppressing,and the vibration amplitude of first two modes is reduced to less than 10% compared to uncontrolled state.

Key words

H&infin / robust control, wind tunnel model, active vibration control, ERA model identification

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SHAO Minqiang,CHEN Weidong,SHE Chongxi. Experiment study on the active vibration control using H∞ method based on ERA identification model[J]. Journal of Vibration and Shock, 2017, 36(2): 72-76

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