The locations of the actuator in the double-layer vibration isolator directly affect its performance on vibration isolation. In the paper, we take the optimal performances for each placement scheme as the criteria and use the method of power flow to study the effect of the passive parameters in the double-layer vibration isolator on the actuator locations. We also do the theoretical derivation and simulation analysis for the two possible actuator locations. The results show that: the actuator should be located between the middle mass and the isolation mass when the damping coefficient between the middle mass and the base mass is larger than the damping coefficient between the middle mass and the isolation mass, or when the middle mass is smaller than the base mass, or when the two stiffness coefficients differ greatly; but for other conditions, the actuator should be located between the middle mass and the base mass.
Yongliang Zhang Baiwei Guo Xiuyun Meng.
The research on the structure of the active/passive vibration isolator applied on the spacecraft[J]. Journal of Vibration and Shock, 2015, 34(1): 151-155
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