Modeling and Simulation of Airborne Photoelectric Turret with Disturbance Observer
摘要
Airborne photoelectric turret (APT) is a kind of optical electromechanical integration equipment widely used in carrier platform. Servo control accuracy and line of sight (LOS) stabilization accuracy are one of the important indicators of airborne photoelectric turret. Airborne photoelectric turret obtains target information through search, detection, identification, and tracking, senses the external environment situation, and provides important judgment basis to command and decision-making for carrier controllers. The change of attitude during carrier maneuvering and disturbance of external environment will cause shaking and instability of the LOS in airborne photoelectric turret and affect control accuracy. Based on establishment of stability control modeling and servo control modeling of airborne photoelectric turret, in order to improve high-precision servo motion control of airborne photoelectric turret under disturbance environment, load disturbance was introduced into the input of controlled object through disturbance observer for feedback compensation. Airborne photoelectric turret was modeled and simulated under different carrier maneuvering and external environment situation, simulation experiment results show that disturbance observer could improve control accuracy of airborne photoelectric turret.