摘要
以大气层外拦截器为背景,为了提高姿态控制系统对干扰力矩的鲁棒性,基于预测控制方法设计了开关式姿态控制律.将导引头视场约束和姿态角速度约束以输出约束的形式添加到预测控制的优化问题中,保证了目标不脱离视场.针对线性化后的姿态运动模型,采用约束"紧缩"的方法,通过适当的调整约束集,保证了算法的鲁棒性.在此基础上得到了带有开关输入的姿态控制对应的优化问题.仿真结果表明,本文给出的设计方法即使在存在较大干扰力矩的情况下仍然能够满足姿态控制精度要求.
In order to improve the robustness of attitude control system to disturbance moment for exo-atmospheric interceptor,the on-off attitude control law is designed based on predictive control.The constraints on field of view and angular velocity are taken as output constraints to be added to the optimization problem of predictive control,thus the deviation of target from field of view is avoided.For the linearized attitude control model,the robustness of algorithm is guaranteed by applying the method of constraint tightening.Based on this,the optimization problem corresponding to attitude control with on-off inputs is obtained.Simulation results show that the proposed method meets accuracy requirements even if large disturbance moment exists.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2010年第1期5-8,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(60674043)
高等院校博士点资助项目(20060213040)
关键词
模型预测控制
开关输入
姿态控制
model predictive control
on-off input
attitude control
