Abstract:Aiming at the problems of low precision and cross-coupling of the angular velocity of the three-axis stabilized platform in the low frequency disturbed environment, a design method of high precision and weak coupling controller for the servo loop of the three-axis stability platform was proposed. A complete closed-loop servo loop transfer function model is derived. According to the design criteria of the servo loop controller, combined with the working environment and index requirements of the three-axis stable platform, a servo loop controller with high precision and weak coupling performance is designed to improve the control accuracy of the inertial platform. Through simulation and dynamic tests, the correctness and superiority of the design method of the servo loop controller with high precision and weak coupling are validated.