论文标题
通过间歇性外扭矩的精确态度稳定
Precision Attitude Stabilization with Intermittent External Torque
论文作者
论文摘要
使用可变的振幅冷气推进器的微卫星的态度稳定，这反映了对照输入的时间变化的增益。现有文献使用基于持久过滤器的方法，通常在特定时间间隔内导致大量控制收益和扭矩输入，与外部驱动的“ ON”阶段相对应。这项工作旨在通过明智地引入额外的时间变化信号作为控制法的一部分，以减少扭矩命令上的瞬态尖峰。通过类似Lyapunov的分析，建立了新的扩展系数和整体闭环稳定性的时间更新机制。数值模拟突出显示了该新的控制算法的各种特征，该算法的航天器态度稳定性受扭矩间歇性的约束。
The attitude stabilization of a micro-satellite employing a variable-amplitude cold gas thruster which reflects as a time varying gain on the control input is considered. Existing literature uses a persistence filter based approach that typically leads to large control gains and torque inputs during specific time intervals corresponding to the 'on' phase of the external actuation. This work aims at reducing the transient spikes placed upon the torque commands by the judicious introduction of an additional time varying scaling signal as part of the control law. The time update mechanism for the new scaling factor and overall closed-loop stability are established through a Lyapunov-like analysis. Numerical simulations highlight the various features of this new control algorithm for spacecraft attitude stabilization subject to torque intermittence.
