大气层外拦截器末段轨控发动机开关控制律

针对处于末段飞行的大气层外拦截器设计了轨控发动机开关控制律。拦截器在飞行过程中轨控推力以持续定常方式或小脉冲方式施加在垂直视线的方向，目标具有一定的机动能力。首先分析了拦截器轨控推力作用下视线转率的变化规律，在此基础上，根据脱靶量的要求设计了拦截器轨控发动机开关控制律，其中考虑了目标机动、瞄准点切换以及小脉冲工作方式对视线转率的影响。仿真表明了该控制律理论上的可行性。

An on-of Control Law of a Divert Thruster for An Exoatmospheric Interceptor During ITS Terminal Course

An on-off control law of a divert thruster for an exo-atmospheric interceptor during its terminal course was put forward. The interceptor had sustain constant thrust or impulsive thrust perpendicular to the line-of-sight during the flight, and the target was maneuverable, Firstly the dynamic characteristics of the line-of-sight rate under control of the thrust were analyzed, based on which an on-off control law of the divert thruster was designed according to the requirement of the miss distance, considering the maneuver of the target, the switch of the aim point and the switch from sustain constant thrust to impulsive thrust. Simulations have proved the feasibility of the control law theoretically.