Configuration Optimization and Static Analysis of Adjusting Parallel Mechanism for the Sub-Reflector of Antenna

Abstract

For the real-time pose adjustment of the sub-reflector of antenna to ensure its best condition, Stewart platform-based mechanism is adopted. This paper presents the configuration optimization of the adjusting parallel mechanism taking the minimum force acted on each limb as the target, and the basic structural parameters of the mechanism are obtained. Considering the weight of the moving platform, the external load, and the influence of the snow and the wind, the maximum force acted on the limbs of the mechanism in the required workspace is calculated, which established the foundation for the structural design of the mechanism. The contents of this paper possess theoretical significance and engineering value for the development of the adjusting mechanism for the sub-reflector of antenna.

Dynamic Tracking Experimental Research of Adjusting System for the Subreflector of 65 Meters Radio Telescope

“…Inverse kinematics is can be obtain according to the structure [9] . The industrial personal computer in the charge of receiving the subreflector adjust command from main computer, then calculate and generate different axis movement commands according to inverse kinematics of parallel adjusting mechanism.…”