Analysis on the effect of the composite piezoelectric actuator’s arrangement on the active micro-vibration isolation platform

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 253-257.

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Analysis on the effect of the composite piezoelectric actuator’s arrangement on the active micro-vibration isolation platform

Tao Shuai1; Bai Hongbai2; Gu wei3

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Abstract

A type of composite piezoelectric actuator with an elastic solid and a piezoelectric connected is designed, which could control the active micro-vibration isolation platform in a wide frequency. When the composite actuator is used in the micro-vibration isolation platform, it is found that the relative position of elastic body and piezoelectric part would affect the control force when the platform falls under different kinds of external disturbance. So, an evaluation function of the control force is built to evaluate the differences caused by different relative positions when the platform has directly and ground disturbance. The simulation result shows that the relative position of elastic solid and piezoelectric part affects the control force indistinctively when the platform has ground disturbance only, but the effect is distinct when the disturbance input is direct disturbance only, which means that the composite piezoelectric actuator element’s relative position is decided by the disturbance, and if the two styles of arrangement in the platform would gain the same isolation effect under the circumstance of laboratory ,the energy’s consumption with the elastic solid above the piezoelectric is less than that below.

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micro-vibration isolation plate / piezoelectric / actuator

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Tao Shuai; Bai Hongbai; Gu wei. Analysis on the effect of the composite piezoelectric actuator’s arrangement on the active micro-vibration isolation platform[J]. Journal of Vibration and Shock, 2011, 30(8): 253-257