一种红外导引头小型快速伺服稳定平台

A small fast servo stabilized platform for infrared seeker

红外导引头是肩扛式反坦克导弹的重要分系统,其主要作用是通过瞄准具人工操作瞄准线运动,锁定目标并对目标进行跟踪。本文采用了速率陀螺稳定平台式随动系统,俯仰+偏航的双框架式结构。通过装在框架内的速率陀螺和角位置传感器分别提供速度和位置信号,利用DSP和FPGA构建随动控制电路,采用电流、速度和位置三环串级闭环PID设计控制框架电机实现目标扫描和跟踪。此方案快速跟踪能力强、跟踪精度高、抗干扰性强、易实现大范围扫描。

The infrared seeker is an important subsystem of the shoulder mounted anti tank missile.Its main function is to lock the target and trace the target by manual operation of the target line motion.The paper adopts the rate gyro stabilized platform servo system,pitch and yaw of the double framed structure.Speed and position signals are provided by means of the rate gyro and angular position sensors installed in the frame,DSP and FPGA are used to build servo control circuit,using current,speed and position three-loop cascade closed-loop PID design control frame motor to realize target scanning and tracing.The scheme has strong tracking ability,high tracking precision,strong anti-interference ability,and easy to realize wide range scanning.