星载重叠天线展开机构逆向拖动问题研究OA

This paper presents a mechanistic analysis and theoretical study of the reverse drag issue in the deployment mechanism of a ground simulation of zero-gravity deployment for a spaceborne overlapping antenna,and conducts practical testing based on the analysis results.During the experiment,the deployed antenna needs to be powered on by the deployment mechanism to maintain it in the deployed position for fixed operation.The antenna reflector will be touched and dragged.Dragging will have a certain impact on the antenna mechanism and structure.This article analyzes and experimentally verifies the impact of this kind of rapid reverse dragging caused by extreme operations.The results indicate that in order to ensure the safety of the flexible wheel,the maximum load torque of the motor of the universal harmonic reducer on board cannot exceed 64.2 N·m.This result provides theoretical data support for the design of antenna structures,enabling a reasonable safety margin in antenna structure design and improving the quality and design speed of antenna products.