Design and Research of Unbalance Torque on Umbrella Style Platform of Three Axis Air-bearing Testbed

Abstract

The three axis air-bearing testbed is the core of the physical simulation equipment,the design and research of unbalance torque on umbrella style platform of three axis air-bearing tested are important guarantee of the physical simulation.Based on the requirements of the simulation,this paper designs the umbrella style platform,then based on the method of kineto-elastodynamic analysis,founds the mechanical model of the umbrella style platform of three axis air-bearing testbed,and the formula for the platform structure mass-center displacement and for unbalance torque of umbrella style platform arising from self-weight deformation are deduced.By the formula,the unbalance torque of umbrella style platform are calculated.The results show that the max-unbalanced torque is 0.23×10-4 N·m,it can meet the requirements of simulation well and provide a good foundation for the next simulation.