拦截器模糊姿态控制律研究

针对带有姿控发动机、在大气层外飞行的拦截器,提出了一种模糊姿态控制律。根据姿控发动机布局,给出了发动机开关逻辑表,考虑到姿控机构具有多级控制能力,基于模糊控制的思想,设计了发动机开启方向和数量的切换策略。随后,利用相平面方法分析了该控制律和PD控制律的相似之处,并指出了前者的优越性。最后,对该控制律的控制效果进行了数字仿真。仿真结果表明,该控制律具有抗干扰、动态品质优良、稳态精度高的特点。

Research on Fuzzy Attitude Control Law for the Interceptor

A fuzzy attitude control law is presented for the exoatmospheric interceptor with attitude control thrusters.The thruster firing logic table is given based on the configuration of the thrusters,and the on-off switching strategy is designed based on fuzzy logic,considering the thrusters on the interceptor can provide multiple-level control capacities.Then,the similarity of fuzzy control and PD control is demonstrated through phase plane analysis,and the superiority of the former is pointed out.Finally,the disturbance reduction characteristic,excellent dynamic quality and high static precision of the control law are shown through numeric simulation.