A hybrid vibration isolator based on piezoelectric and viscoelastic materials
LI Ming-ming1,FANG Bo2,ZHEN Ya-xin3,ZHAO Jin-xin1
1. Beijing Mechanical Equipment Institute, Beijing 100854, China;
2. School ofAstronautics, Harbin Institute of Technology, Harbin 150001, China;
3. School of Mathematical & Physical Science, North China Electric Power University, Beijing 102206, China
A new hybrid vibration isolator (HVI) with an laminated piezoelectric actuator used as an active vibration isolation component and viscoelastic material used to design a passive vibration isolation component was proposed to reduce the effects of vibration loads on structures. Taking a simulated rigid satellite as a study object, the dynamic model of the wholespacecraft hybrid vibration isolation system was established to analyze the vibration isolation principle of a HVI numerically. Then, the singleinput multipleoutput PID control method was used to design an active controller, tests were performed for the simulated rigid satellite hybrid vibration isolation system. The simulation and test results showed that a HVI can effectively reduce the vibration loads transmitted to structures compared with a pure passive vibration isolator, especially, near natural frequencies of structures, so the safety and reliability of structures can be improved significantly.
李明明1,方勃2,甄亚欣3,赵金鑫1. 压电-粘弹性材料混合隔振器的设计与研究[J]. 振动与冲击, 2017, 36(1): 134-140.
LI Ming-ming1,FANG Bo2,ZHEN Ya-xin3,ZHAO Jin-xin1. A hybrid vibration isolator based on piezoelectric and viscoelastic materials. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(1): 134-140.
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