考虑转动速率约束与控制约束的时间高效速率反馈跟踪控制器
Time Efficient Rate Feedback Tracking Controller with Slew Rate and Control Constraint
AI总结:
针对姿态跟踪中的转动速率与控制约束问题,提出一种基于滑模面的时间高效控制器,通过沿瞬时特征轴设计整形后的调节角速度,在满足约束的同时最小化调节时间,经地球观测卫星场景验证了性能。
摘要:
本文提出一种同时考虑转动速率约束和控制约束的时间高效姿态跟踪控制器。该算法定义了由指令角速度、本体角速度和调节角速度线性组合而成的滑模面,并利用该滑模面推导可保证有限时间稳定性的控制指令。调节角速度是用于修正指令坐标系与本体坐标系之间姿态误差的角速度,其沿两坐标系间的瞬时特征轴定义,以最小化旋转角度。此外,对调节角速度进行了整形,使其满足转动速率约束,同时在考虑控制约束的前提下最小化调节时间。研究采用涉及地球观测卫星的实际场景来验证该算法的性能。
英文摘要:
This paper proposes a time-efficient attitude-tracking controller considering the slew rate constraint and control constraint. The algorithm defines the sliding surface, which is the linear combination of command, body, and regulating angular velocity, and utilizes the sliding surface to derive the control command that guarantees finite time stability. The regulating rate, which is an angular velocity regulating the attitude error between the command and body frame, is defined along the instantaneous eigen-axis between the two frames to minimize the rotation angle. In addition, the regulating rate is shaped such that the slew rate constraint is satisfied while the time to regulation is minimized with consideration of the control constraint. Practical scenarios involving Earth observation satellites are used to validate the algorithm's performance.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。