Design of air-bearing simulator for free-flying robot

Ce XU; Da-wei LI; Shuai HE; Ming-yi XIA; Zhi-yuan ZHAO

doi:10.3788/OPE.20192702.0352

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Design of air-bearing simulator for free-flying robot

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- Design of air-bearing simulator for free-flying robot
- Optics and Precision Engineering Vol. 27, Issue 2, Pages: 352-362(2019)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所，吉林长春 130033
  2.中国科学院大学，北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192702.0352
  CLC： TP242.3
- Received：05 July 2018，
  
  Accepted：30 August 2018，
  
  Published：15 February 2019
- 稿件说明：
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Ce XU, Da-wei LI, Shuai HE, et al. Design of air-bearing simulator for free-flying robot[J]. Optics and precision engineering, 2019, 27(2): 352-362.
DOI：

Ce XU, Da-wei LI, Shuai HE, et al. Design of air-bearing simulator for free-flying robot[J]. Optics and precision engineering, 2019, 27(2): 352-362. DOI： 10.3788/OPE.20192702.0352.

摘要

为了搭建在轨组装的地面模拟实验系统，设计了一种基于冷气推进、能够自由漂浮的三自由度自由飞行机器人模拟器，并对模拟器的结构设计、气路系统、动力学建模和控制系统进行了研究。采用模块化设计对主体结构进行不同功能的分区，并结合工作原理对模拟器的承载能力进行了分析和实验验证。然后，采用部分解耦的方式对喷嘴进行了布置，进一步设计了整个气路系统，并对影响喷嘴推力的因素进行了理论分析和实验验证。最后，采用牛顿-欧拉法建立了模拟器的动力学方程，联合Simulink和Adams，搭建了控制仿真模型并进行了运动仿真。实验结果显示，模拟器能够承载800 kg以上的重量，单方向上能够达到8 N的力，整体运行时间能够达到30 min。模拟器对参考输入有很好的跟踪效果，能够为超冗余模块化机械臂的地面实验提供可移动载体。

Abstract

To build a ground simulation experiment system for an in-orbit assembly

based on cold gas propulsion

we design a three-degrees-of-freedom free-flying robot simulator

and analyze the structural design

gas path system

dynamic modeling

and control system of the simulator. First

we adopt a modular design to partition the main structure of the simulator for different functions. Second

according to the working principle

we analyze and verify the bearing capacity of the simulator through an experiment. Subsequently

we arrange the nozzle in a partially decoupled way with the entire air path system

which is further designed. Then

we analyze the factors that influence the thrust size of the nozzle theoretically and verify them experimentally. Finally

we use the Newton-Euler method to establish the dynamic equation of the simulator. Simultaneously

combined with Simulink and Adams

we build a control simulation model and perform a motion simulation. The experimental results show that the simulator can carry a weight of more than 800 kg

with a force of 8 N on a single side and an overall running time of 30 min. Through simulation

we observe that the simulator has a good tracking effect on the reference input. The designed simulator can provide a mobile carrier for ground experiments of a super-redundant modular manipulator.

关键词

Keywords

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