Research On Galvanometer Servo Control System Based On Fractional Orde ADRC

Galvanometer mirror servo control system is widely used in various fields.Because of its high precision and fast response in practical application,it has become one of the important means used in target tracking experiment,which can realize the tracking of high-speed moving targets.However,with the expansion of the scope of application,the response speed,tracking accuracy and the ability to resist interference in practical application are difficult to meet the application requirements due to the diversity of its structure and the particularity of the use environment.Although the traditional control method reduces the influence of these factors on the whole control system,it is difficult to meet the high precision requirements.In view of the actual use requirements,this paper has carried on the related research.In this paper,the control method adopted by the galvanometer servo control system is studied.The main objective is to improve the capabilities of the galvanometer servo system in high-speed vision system,such as fast response,high precision tracking and anti-interference,and improve the accurate real-time tracking of high-speed targets.This paper designs a galvanometer servo system based on Fractional Order Active Disturbance Rejection Controller(FOADRC).The main work is as follows:(1)In order to meet the requirements of the galvanometer servo control system,the constitution of the galvanometer servo control system is analyzed,and the working principle is described.Then the whole system is designed,and the mathematical model of the system is established.At the same time,the relevant materials are selected according to the requirements of practical application.(2)In Order to improve the performance of the three aspects of the galvanometer control system,a novel Fractional Order Active Disturbance Rejection Controller(FOADRC)is designed.Firstly,the principle of active disturbance rejection control and fractional order theory are analyzed.Then,based on the traditional active disturbance rejection to improve the vibration mirror control problems,so as to meet the requirements of the traditional control algorithm to improve the response speed,tracking accuracy and anti-interference ability of the control system.It improves the application ability of the control system in different application environment and expands the application range of the control system.(3)In order to verify the feasibility of the fractional-order active disturbance rejection control strategy,the proposed strategy and the improved active disturbance rejection control strategy are verified by simulation and experiment.The simulation part is mainly built using Matlab software,and the built galvanometer simulation model for simulation experiments to verify all aspects of performance.The experiment is to establish an experimental platform based on simulated trajectory tracking,apply high-speed camera,take high-speed moving objects as objects,and apply three control strategies to control the galvanometer deflection experiment to verify the effects in various aspects.Finally,Through the simulation and experimental results,the actual control effects of various control algorithms are illustrated.The experimental results show that the fractional-order active disturbance rejection control method designed in this paper can be used to control the vibration mirror servo control system,which can realize the rapid response effect when tracking the target,and achieve the high tracking accuracy of the target while satisfying the good anti-interference ability.At the same time,in order to better validate the effect,experiments are carried out in different input signal environments to verify the various performance of the fractional active disturbance rejection strategy control on the target control.The results show that compared with the traditional active disturbance rejection strategy,the control strategy proposed in this paper improves the response speed by about 40%,the anti-interference ability by about 50% and the tracking accuracy by about 10%.It is of great significance to the future development and research of galvanometer servo control system.