<p>The transient attitude tracking performance is fundamental in ensuring spacecraft safety during high-stakes scenarios. However, existing methods often struggle to simultaneously ensure robustness and strict transient performance constraints under disturbances. A robust tubular prescribed performance tracking control method is proposed in this paper, and the transient response is explicitly regulated. The asymmetric tubular performance boundaries for attitude tracking are designed based on the time-domain response of second-order linear systems, where the damping ratio and natural frequency serve as tunable parameters to satisfy the performance requirements. It explicitly enforces transient performance constraints like settling time and overshoot by strictly constraining the tracking errors within the tubular boundaries. The immersion and invariance-based observer is also employed to further enhance its performance under external disturbances. Closed-loop stability analysis and simulations are conducted for the proposed robust tubular prescribed performance controller. Numerical results also demonstrate its enhanced performance in suppressing overshoot and oscillations under disturbances.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Robust attitude tracking control for rigid spacecraft with tubular prescribed performance

  • Zhong Wang,
  • Yan Li,
  • Jinxi Lang,
  • Xu Peng,
  • Zhenqian Sun,
  • Kun Liang

摘要

The transient attitude tracking performance is fundamental in ensuring spacecraft safety during high-stakes scenarios. However, existing methods often struggle to simultaneously ensure robustness and strict transient performance constraints under disturbances. A robust tubular prescribed performance tracking control method is proposed in this paper, and the transient response is explicitly regulated. The asymmetric tubular performance boundaries for attitude tracking are designed based on the time-domain response of second-order linear systems, where the damping ratio and natural frequency serve as tunable parameters to satisfy the performance requirements. It explicitly enforces transient performance constraints like settling time and overshoot by strictly constraining the tracking errors within the tubular boundaries. The immersion and invariance-based observer is also employed to further enhance its performance under external disturbances. Closed-loop stability analysis and simulations are conducted for the proposed robust tubular prescribed performance controller. Numerical results also demonstrate its enhanced performance in suppressing overshoot and oscillations under disturbances.