三轴稳定质量矩拦截器的末制导律设计

针对大气层内的机动飞行目标,提出了一种可用于质量矩拦截器末制导段的比例制导律。通过建立三轴稳定质量矩拦截器的数学模型,得到一个非线性动力系统。考虑到法向过载变化比较灵敏的特点,以姿态角及过载的误差作为指标函数,采用遗传算法对PD控制参数进行寻优设计,建立了滑块位置与过载、姿态角的关系。仿真结果表明,该方法在保证姿态稳定的情况下能有效实现拦截器末段的制导控制,且满足一定的精度要求。

Design of Terminal Guidance Law for Mass Moment Interceptor with Three-axial Stabilization

A terminal guidance law based on proportional navigation was proposed for intercepting the maneuverable target in intra-atmospheric space. According to the constructed model of the mass moment interceptor with three-axial stabilization, a nonlinear dynamic system was acquired. Taking the time-variant overloading into consideration, the attitude angles and overloading error were used for the performance index. After the control parameters were optimized using genetic algorithm, the corresponding relation was founded between the moving mass position and overloading, attitude angles. Simulation results show that the attitude stabilization can be satisfied to realize efficiently the terminal guidance of interceptor as well as precision demand.