空间态势感知卫星非线性积分滑模控制  

Nonlinear Integral Sliding Mode Control for Space Situational Awareness Satellite

作　　者：董天舒[1] 何英姿[1,2] 李克行[1,2] 陈上上 刘贺龙[1] Dong Tianshu He Yingzi Li Kehang Chen Shangshang Liu Helong(Beijing Institute of Control Engineering, Beijing 100190, China Science and Technology on Space Intelligent Control Laboratory, Beijing 100190, China)

机构地区：[1]北京控制工程研究所,北京100190 [2]空间智能控制技术重点实验室,北京100190

出　　处：《航天控制》2016年第6期40-45,53,共7页Aerospace Control

摘　　要：研究初始姿态跟踪误差较大和模型参数不确定条件下空间态势感知卫星对典型轨道目标指向跟踪控制问题。在常规积分滑模的基础上,利用最速跟踪滤波理论和超螺旋算法,设计一种新型非线性积分滑模控制器。通过指令滤波,使闭环系统运动初始时刻即在滑模面上,克服了常规滑模控制器到达阶段不具有鲁棒性的缺点。在滑模函数中加入非线性积分项,将稳态误差控制在较小范围内。通过仿真表明这种新型的滑模控制器可完成指向跟踪任务。The control problem of space situational awareness satellite pointing tracking the typical orbit target is investigated under the situation of large initial error and structured model uncertainty. A new type of nonlinear integral sliding mode is proposed using tracking differentiator filter theory and super twisting algorithm. Though filtering the command, the output of controller avoids the shortcomings that the traditional sliding mode control did not have the robustness in the reaching phase. Nonlinear integral function is added in the sliding function to limit the steady state error. Numerical simulation results are presented to verify the effectiveness of the controller.

关 键 词：空间态势感知 指令滤波 最速跟踪滤波器 非线性积分滑模 超螺旋算法 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]