空间机械臂操作子系统设计与实现

Design and Implementation of Space Manipulator Operating Subsystem

空间机械臂作为中国空间站建设和在轨运营的重要平台,具有自由度多、转动惯量大、操作精度高、模式多样等特点.针对空间机械臂在轨任务特点,建立了支持长期在轨、多模式工作的空间机械臂操作子系统.该操作子系统由机械臂操作台、虚拟仿真平台、显示器等构成,可满足多任务需求.通过对操作子系统的架构、工作模式、技术特点的分析,重点研究了操作子系统的多总线体系结构、多模态人机交互技术、力觉渲染算法,并根据地面验证和在轨试验,给出了空间机械臂操作子系统的验证情况.结果表明,空间机械臂操作子系统可有效模拟在轨任务,准确完成对机械臂的控制与精细操作,为支撑空间机械臂任务实施积累了经验和数据.

As an important platform for the construction and on-orbit operation of space station,the space manipulator operating subsystem is the first independently developed large-scale space robotic system for aerospace engineering applications in China.The space robot arm has 14 degrees of freedom under the combination of the two arms,with large motion inertia,high operating precision,and support for multi-mode work.In this paper,according to the characteristics of space manipulator on-orbit mission,a space manipulator operation subsystem is established,which is supporting long-term on-orbit and multimode operation.The operation subsystem is composed of manipulator console,virtual simulation platform and display,which can meet the requirements of multitasking.This paper provides a summarize overview of the architecture,working mode,and technical characteristics of the operation subsystem,and focuses on analyzing the system bus structure,multimodal human-computer interaction technology,and force perception rendering algorithms of the operation subsystem.According to the ground test and on-orbit work,the verification of space manipulator operation subsystem is obtained,which provides valuable experience and data for space manipulator operation mission.The results show that the space manipulator operating subsystem can better carry out on-orbit management of the space robotic arm,monitor the whole process of it,as well as ground and on-orbit remote control and manipulation;the application of force perception rendering technology can better support the fine manipulation of the space robotic arm end and joints;the virtual simulation platform can effectively simulate the on-orbit tasks of the space robotic arm and simulate the pre-task rehearsal and training of the support task.The space manipulator operating subsystem has accumulated experience and data to support space robotic arm mission implementation.