临近空间飞行器超螺旋滑模自适应姿态控制  

Adaptive Attitude Control of Super-Twisting Sliding Mode for Near Space Vehicle

作　　者：周奕雯 仲科伟 张万超 金一欢 蒋虎超 ZHOU Yiwen;ZHONG Kewei;ZHANG Wanchao;JIN Yihuan;JIANG Huchao(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China)

机构地区：[1]上海航天控制技术研究所,上海201109

出　　处：《空间控制技术与应用》2022年第1期9-15,共7页Aerospace Control and Application

基　　金：北京市自然科学基金资助项目(4192068);陕西省自然科学基础研究计划项目(2020JQ-221)。

摘　　要：针对临近空间飞行器快速滚转机动过程中的姿态控制问题,提出一种改进的超螺旋滑模自适应控制方法.考虑模型不确定以及干扰,建立临近空间飞行器非线性耦合数学模型.为了增强控制器的鲁棒性并削弱抖振影响,设计并改进超螺旋滑模控制器,提高响应速度和控制精度.针对复合干扰导数上界存在但未知的情况,设计自适应律对控制器参数进行估计.利用Lyapunov理论证明闭环系统的稳定性,通过数字仿真进行指令跟踪性能和鲁棒性能验证.仿真结果表明,该控制器具有良好的姿态控制能力,能够有效抑制干扰,同时削弱抖振,控制参数具有自适应性.Aiming at the attitude control problem during the rapid roll maneuvering of a near space vehicle, an improved super-twisting sliding mode adaptive control method is proposed. Considering the model uncertainty and interference, the nonlinear coupling mathematical model of the near space vehicle is established. In order to enhance the robustness of the controller and reduce the impact of chattering, the super-twisting sliding mode controller is designed and improved to improve the response speed and control accuracy. When the upper bound of the disturbance derivative exists but unknown, an adaptive law is designed to estimate the controller parameters. Lyapunov theory is used to prove the stability of the closed-loop system, and the tracking performance and robust performance are verified through digital simulation. The simulation results show that the controller has great attitude control ability, and can effectively suppress interference, weaken chattering at the same time. Meanwhile, the control parameters are adaptive.

关 键 词：临近空间飞行器 姿态控制 超螺旋滑模 自适应控制 

分 类 号：V448[航空宇航科学与技术—飞行器设计]