| 摘要: |
| 绳系释放过程是电动力绳系火箭末级离轨技术的关键，开展了绳系释放条件分析及控制方案设计。首先，基于“珠式”思想，建立离轨系统绳系释放过程的刚-柔耦合动力学模型。随后，基于数值仿真开展绳系释放条件分析。仿真结果分析发现，释放时火箭末级初始姿态对绳系释放稳定性影响较大，仅靠绳系拉力控制，系统稳定裕度较小，很难保证绳系释放稳定性。据此，进一步提出了一种绳系稳定释放控制方案，并通过数值仿真验证了控制方案的有效性。 |
| 关键词: 电动力绳系离轨 火箭末级 绳系释放条件 控制方案设计 |
| DOI： |
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| 基金项目:国家自然科学基金项目（61703437） |
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| Requirement Analysis and Control Design for Tether Deployment of Electrodynamic Tethered Upper-Stage Deorbit System |
| ZHANG Feng,WANG Xiaoding,WANG Shuting,WU Shengbao,GAO Zhaohui |
| (Research and Development Department, China Academy of Launch Vehicle Technology) |
| Abstract: |
| Tether deployment is key to the electrodynamic tethered deorbit process for the removal of abandoned upper-stages. This paper studies the requirements and control design for the tether deployment phase. Based on "bead" philosophy, a rigid-flexible coupling dynamics is firstly formulated. Further, the requirement analysis of the initial attitude of upper-stage is developed via numerical simulations, which dedicates that the attitude control for the upper-stage is necessary. Then, a control scheme is proposed to ensure a stable deployment. Finally, numerical simulations show the effectiveness of the proposed scheme. |
| Key words: Electrodynamic tethered deorbiting Upper-stages Tether deployment requirement Control scheme design |