Cui Lei, Jin Nan, Chang Shaoping, Zuo Zhiqiang, Zhao Zhengen
School of Electrical and Information Engineering, Tianjin University, Tianjin, 300072, China.
College of Automation Engineering, Institute of Flight Control, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
ISA Trans. 2022 Jun;125:237-251. doi: 10.1016/j.isatra.2021.06.039. Epub 2021 Jul 13.
This paper studies a novel fixed-time extended state observer based fixed-time integral terminal sliding mode controller for partial integrated guidance and control design. Firstly, a class of arbitrary-order systems with fixed-time stability is proposed by utilizing homogeneous approach, whose upper bound of convergence time is given. Then, an arbitrary-order fixed-time integral terminal sliding mode control is designed based on the proposed arbitrary-order fixed-time stable system, which avoids the singular problem. Subsequently, this paper constructs a new fixed-time extended state observer to further actively compensate for the disturbance caused by unknown target acceleration. Finally, numerical simulations show the effectiveness of the proposed controller.
本文研究了一种基于新型固定时间扩展状态观测器的固定时间积分终端滑模控制器，用于部分集成制导与控制设计。首先，利用齐次方法提出了一类具有固定时间稳定性的任意阶系统，并给出了其收敛时间的上界。然后，基于所提出的任意阶固定时间稳定系统设计了一种任意阶固定时间积分终端滑模控制，避免了奇异问题。随后，本文构造了一种新的固定时间扩展状态观测器，以进一步主动补偿未知目标加速度引起的干扰。最后，数值仿真验证了所提控制器的有效性。
