基于视线角速率的最优增量制导技术研究

提出一种基于视线角速率最优的制导方案。方案从最优控制的性能指标函数出发,通过求解一个Riccati方程和相关约束条件,并对系统进行一系列的相关的理想化的假设,得到系统的一般形式的制导指令。同时,为了避免制导指令在正负之间的频繁切换,根据偏置比例制导的原理,在制导指令中引入一个制导指令的增量,来减轻这一问题,并与传统的比例制导进行比较。仿真结果表明,这种制导方法相对于比例制导律而言,精度较高,性能优良,具有一定工程参考意义。

Research on Increment Guidance Law Based on the Optimal Line of Sight Angular Rate

A research on increment guidance law based on the optimal line of sight angular rate is proposed.From the optimal control performance index function,proceed by solving a Riccati equation and the related constraints and a series of idealized assumptions to get the system of guided command.Meanwhile,in order to avoid the guided command to switch frequently between positive and negative,incremental of the guided command was added to improve this problem.Then,giving a competition between the traditional proportional navigation and this law and the simulation results show that this method of guidance law has high precision and excellent performance,with a certain reference value engineering.