两回路自动驾驶仪设计与分析

分析了参数变化引起的弹体模型和静稳定性的改变,以及降低静稳定性对导弹机动性能的改善。研究了把工程指标转化为期望的闭环系统极点的方法,以及与全状态反馈等价的从状态反馈到输出反馈的变换技术,给出了基于极点配置和输出反馈的一般性的两回路自动驾驶仪设计方法。结果表明,两回路驾驶仪可以稳定静不稳定的弹体,而执行机构的有限的资源是限制驾驶仪控制作用的关键因素之一,引入加速度计到弹体质心距离这一参数后可以在一定程度上改善系统的稳定性。

Design and analysis of a two-loop autopilot

The variation of both the missile model and static stability caused by varying parameters is analyzed.The benefit of reducing missile static stability on missile maneuverability is presented.The transform technologies both of engineering index into the desired system poles and state feedback into output feedback are discussed.A general two-loop autopilot design method based on pole assigement and output feedback is proposed.The two-loop autopilot can stabilize a static unstable missile,and the finite resource of actuator is one of the crucial factor for restricting autopilot control function,however.The parameter as the distance from accelerator to missile gravity center is applied to improve system stability.