精确末制导的自耦PI制导律

Auto-Coupling PI Guidance Law with Precision Terminal Guidance

针对导弹末端制导问题,提出了一种基于自耦PI的控制方法。该方法将弹目运动系统的内部动态和外部扰动定义为总扰动,进而将非线性不确定系统转化为未知线性系统,据此以导弹的航迹角来跟踪弹目视线角为控制目标,构建了弹目受控误差系统,根据自耦PI镇定规则,设计一种自耦PI制导律。理论分析弹目制导系统的鲁棒稳定性和抗扰动鲁棒性,仿真结果表明了该制导方法的有效性,在精确末制导拦截领域具有重要的应用价值。

Aiming at the problem of missile terminal guidance,a control method based on Auto-coupling PI is proposed.The internal dynamics and external disturbance of the missile target motion system are defined as the total disturbance,and then the nonlinear uncertain system is transformed into an unknown linear system.Based on this,a missile target controlled error system is constructed by using the missile track angle to track the missile target line of sight angle as the control target.According to the Auto-coupling PI stabilization rule,an auto PI guidance law is designed.The robust stability and anti disturbance robustness of missile target guidance system are analyzed theoretically.The simulation results show the effectiveness of the proposed guidance method,which has important application value in the field of precise terminal guidance interception.