临近空间拦截弹直接力/气动力复合控制

Blended control of near space interceptor by using reaction-jet and aerodynamics

针对临近空间拦截弹直接力/气动力复合控制的特性,提出一种基于干扰观测器的保性能跟踪控制器设计方法。首先设计观测器对系统中存在的干扰进行估计,同时设计干扰补偿器抑制干扰对系统的影响;然后,设计复合跟踪控制器保证闭环系统稳定,并为系统性能指标提供一个最小化上界,相应的控制器参数可由线性矩阵不等式问题的可行解构造得到。仿真结果表明,所设计的复合控制系统能快速跟踪过载指令。

Design method of a disturbance-observer-based guaranteed cost tracking controller is proposedfor the blended control system of the near space interceptor with reaction-jet and aerodynamics. Initially,a disturbance observer was proposed to estimate the unknown system disturbance, and then a disturbancecompensator was designed to effectively counteract the disturbance effect. Then, a composite trackingcontroller was developed to not only ensure the stability of the closed-loop system, but also provide a min-imized upper boundary of the performance indices. Parameters for controller were presented in terms ofstandard linear matrix inequalities. Simulation results indicate that the blended controller can track theoverloadcommand accurately for the near space interceptor.