Research on Design of Antennae Tacking-Pointing Control System for Airborne Platform

For many airborne platforms with antenna, it´s an important task to research on the control of antenna pointing, and it is essential to solve the problem of the robustness, stability, and high accuracy tracking control in the time-varying, uncertain parameters system. This paper mainly designs the scheme of the antenna tracking-pointing control system based on an assistant beaconing, which is composed of an infrared beacon, a precise four-quadrant photo-detector (FQPD) for orientation detecting and a servo of antenna. The system is designed without an explicit mathematical model of the antenna. By application of nonlinear control system design method, the antenna control model is dynamically compensated. The simulation results indicated the proposed antenna control system has the high precision and the strong robustness against the disturbance; especially it´s very simple and economical. Also, it can track the target robustly, without the position and the attitude of the airborne platform.