| The paper introduces the control program of the turntable system based on the development of the turntable servo system of the tracking radar, and analyzes the mathematical model of double motor synchronous linkage servo system. The radar antenna wind load analysis and fuzzy PID control system based on the disturbance observer for surpressing wind disturbance algorithm design is completed.Firstly, the system's performance indicators and overall program is introduced. In order to meet high-precision tracking system requirements, the program of double motor synchronous linkage is adopted to eliminate backlash effect on system performance,and its mathematical model is introduced.Secondly, wind load of the radar antenna is studied, and the mechanical analysis of circular parabolic radar antenna is made, then radar antenna discipline of wind load variation is obtained by the use of least squares curve fitting of the data on the wind load based on MATLAB.Finally, the introduction of control system based on the disturbance observer of the basic principles and design methods, and analysis of the impact of anti-interference ability and stability of the low-pass filter parameters on the system is made. The design of Fuzzy-PID controller based on the disturbance observer is divided into two separate stages, namely the performance design phase (for controller design), and interference supression phase (design disturbance observer compensator). The Fuzzy-PID controller design is completed by the Fuzzy toolbox of MATLAB, simulation results show that the performance of Fuzzy-PID controller is better than conventional PID controller; For the wind load disturbance on the servo system performance, disturbance observer is designed, and the simulation of the control system based on the disturbance observer is completed. The results show that PID controller based on the disturbance observer can effectively suppress wind load disturbance. |
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