Practical Control for Inertial Stabilization Systems

Abstract

This paper presents a controller design for an inertial stabilization system. The system has a 2-DOF gimbals which will be attached to an aviation vehicle. Due to dynamics of the aircraft, the line of sight (LOS) will be disturbance. So the LOS will be stabilization. A PID controller used in the inner loop or gimbals servo-system to control the gimbals motion. An indirect LOS stabilization will be controlled by the outer loop controller. An IMU is mounted on the base of the system to measure base rate and orientation of the gimbals in reference to the fixed reference frame. It can be withstand high angular slew rates and vibration from the aircraft structure. The experimental results illustrated that the controllers are capable enough to stabilize the LOS.