Movement Analysis of Pulley-Rail System Used in Space-Borne Perimeter Truss Antenna

Abstract

A numerical analysis model is established based on the multi-body dynamics and the rigid-flexible coupling technology. The movement performance of the pulley-rail system used in space-borne perimeter truss antenna is studied by this model. The influence of several parameters on the motion performance are investigated. The results show that angular rotating velocity of the roller, sliding velocity of the roller contacting point, and sliding ratio of the roller increase with driving force and decrease with friction coefficient. The material should be carefully selected to make the friction coefficient between the roller and guide rail reasonable. The research in this paper is helpful to provide technical support for solving similar problems in space mechanism, and has high engineering significance and application value.