Dong Longlei

Yan Guirong

State Key Laboratory of Mechanical Structual Strength & Vibration,

Xi’an Jiaotong University,

Xi’an 710049, China

Li Ronglin

China Engineering Physics Institute,

Mianyang 621000, China

Abstract: The mechanical characteristics of the electro-hydraulic servo system in the centrifuge field are analyzed. The hydraulic pressure law in the centrifuge field indicates the existence of the centrifuge hydraulic pressure. The mechanical characteristics of the slide-valve and the dual nozzle flapper valve are studied, and it is found that the centrifuge field can not only increase the driving force or moment of the function units, but also decrease the stability of the components. Finally by applying Gauss minimum constraint principle, the dynamic model of the electro-hydraulic vibrator in the centrifuge field is established, and the mechanical restriction of the system is also presented. The study will be helpful for the realization of the combined vibration and centrifuge test system.