文中研究了战术导弹上广泛应用的三回路过载驾驶仪的快速性极限问题。首先从自动驾驶仪数学模型出发,建立了闭环极点与系统带宽的关系,提出了理想响应下闭环极点配置的共圆准则,然后从系统频带设计及闭环零、极点分布的角度,分别分析了高频部件带宽、舵机角速率限制以及闭环零点对于系统快速性的约束,从而建立了自动驾驶仪快速性极限的数学描述,并通过驾驶仪设计实例验证了结论的正确性。

The rapidity limitation problem of three-loop acceleration autopilot widely used in tactical missiles is studied. Based on the math-ematic model of autopilot, the relation between close-loop poles and system bandwidth was firstly constructed, and the concyclic rule of pole-placement was proved necessary to obtain ideal system response. Then according to the design of system bandwidth and the placement of close-loop system pole-zeros, the constraints on the autopilot rapidity limitation was analyzed, which including the bandwidth of high fre-quency components, the limitation of the fin rate, and the close-loop zeros. Therefore the mathematic description of autopilot rapidity limi-tation is concluded, which is validated by autopilot design examples.