摘要
在空间拦截弹精确控制优化问题的研究中,针对临近空间直接力/气动力复合控制拦截弹的控制问题,提出一种具有干扰抑制和补偿能力的复合跟踪控制器设计方法。考虑到输入通道中的干扰影响,设计了基于干扰观测器和H∞控制的复合控制器,并基于线性矩阵不等式对其进行求解,使得闭环系统稳定并满足一定的H∞性能。针对直接侧向力由脉冲发动机提供时的控制量偏差,通过非线性容限分析方法得出闭环系统稳定的充分条件。仿真结果表明,改进设计方法的有效性,可为拦截弹精确控制提供依据。
A design method of composite tracking controller with the disturbance rejection and compensation per- formance was proposed for the near space interceptor with blended lateral thrust and aerodynamic force. For the dis- turbance effect in the input channel, a composite control scheme combining the disturbance-observer-based control （DOBC） and H∞ control was developed to not only ensure the stability of the closed-loop system, but also satisfy a desired H∞disturbance attenuation constraint. The problem can be solved based on the linear matrix inequalities （LMIs）. Because of the control bias, when the lateral thrust is provided by some pulse thrusters, some sufficient conditions are given to ensure the stability of the closed-loop system based on the nonlinear tolerance analysis meth- od. Finally, the simulation results demonstrate the effectiveness of the proposed design method.
出处
《计算机仿真》
CSCD
北大核心
2014年第3期92-95,104,共5页
Computer Simulation
基金
航空科学基金资助项目(20100196002)
关键词
临近空间拦截弹
干扰观测器
复合控制
非线性容限
Near space interceptor
Disturbance observer
Blended control
Nonlinear tolerance
