Analysis and Design of the Stabilization Loop for Ship-Borne Antenna Servo System

Abstract

To improve the ability of the ship-borne antenna servo system to isolate the ship’s shaking, the stabilization loop that uses gyroscope as the feedback element is the commonly used, but choosing frequently-used PID regulator as a form of its regulator often cannot obtain satisfactory result, hence, the form of regulator that uses PID + integrator + lag compensation is put forward in this paper, and the parameter debugging depends on the rise time of the stabilization loop through analyzing the bandwidth and response speed of servo loop. After the completion of the regulator, sinusoidal signal that amplitude is 8° and cycle is 10 s is added in the system as ship-swaying to verify the effect of the scheme, the result of the experiment is that the tracking error of azimuth axis of the antenna decreases from 0.1° to 0.05°, and the tracking error of elevation axis is reduced from 0.24° to 0.049°. It shows that the approach that puts PID + integrator + lag compensation as the form of the regulator of stabilization loop is correct and effective.