基于微重力模拟实验的在轨维修时间预计修正方法

A method for correction of predicting on-orbit maintenance time based on simulated microgravity experiment

准确预计在轨可修系统的维修时间并及时配送维修保障资源对于提高空间站的可靠性具有重大意义。针对现有在轨维修时间预计方法的局限并考虑微重力对维修时间的影响,提出基于微重力模拟实验的在轨可修系统维修时间预计修正方法。通过中性浮力水槽模拟微重力环境,在水下进行一段拆卸任务并记录时间,获得各个关节的基准动作时间,并对比模特法验证了该方法的准确性。之后,结合空间站中的其他影响因素,在模拟实验数据的基础上,推导出空间站的在轨维修基准动作时间标准,可为空间站维修活动时间预计和维修性设计提供参考。

Accurate prediction of on-orbit maintenance time and timely delivery of maintenance support resources are of great significance for improving the reliability of the space station.In view of the limitations of existing on-orbit maintenance time prediction methods and the impact of microgravity on maintenance time,a method for correction of predicting maintenance time of on-orbit repairable systems was proposed based on the simulated microgravity experiment.By using a neutral buoyancy water tank to simulate the microgravity environment,a disassembly task was carried out underwater and the time was recorded to obtain the reference action time of each joint.The accuracy of the method was verified by comparison with the MOD method.Then,taking account of other influencing factors in the space station,the reference action time standard of the space station on-orbit maintanance was derived based on the data of the simulated experiments.The results may provide a reference for the prediction of maintenance activity time and the maintenance-oriented design of the space station.ion.