Research On Intelligent Control Method And Realization Of Embedded System Of Tracking Radar

The subject of the paper comes from a research institute.The aim is to develop the servo control system of tracking radar.Tracking radar is an important field in radar technology.With its application field and function expanding,servo control system and control algorithm as its main component,its performance has a direct impact on tracking precision of tracking radar.At present,the servo control system of tracking radar is developing from DC to AC,analog to digital,classical control to modern control.These development trends and theories lay the foundation for the development of tracking radar with high precision and high performance.Based on the subject,the paper studied deeply into the control algorithm of tracking radar and the realization of its embedded system.First,the servo control system used double motor drive system for the elimination of backlash.The system had the characteristics of inhibiting the non-linear factor and the transmission error.Besides,the system used closed loop control structure with the current loop,the speed loop and the position loop.So that the tracking radar had the following good characteristics: fast response,high tracking precision and wide speed range.In the research of control strategy,the dynamic model and simulation model of the double motor backlash system were established.On the basis of the system,the classical PID algorithm,the adaptive PID algorithm and the PID algorithm based on the self-learning of BP neural network were studied about control precision,realization complexity,stability.It found that the classical PID algorithm was highly efficient,easy to realize and had high stability,but the control precision was poor.The PID algorithm based on self-learning of BP neural network had the best control result,but it was difficult to realize,and the stability was poor.The adaptive PID algorithm had high stability and could meet the system requirement in the control precision.In the realization of the embedded system of the servo control system,the hardware circuit used the top-to-bottom,modular and fully digital design method.Through the optical coupling isolation technology,it reduced the coupling between the modules and improved the reliability and noise immunity of the servo system control board.Besides,the software design used the multi-task real time processing technology.It improved the execution efficiency of the processor,and realized the functions of pointing,scanning,automatic tracking and manual control through using the adaptive PID control algorithm.In addition,local and far control had separately monitoring modules.It realized the functions of real-time online monitoring,automatic fault detecting and automatic testing.The research of the servo control system and the control algorithm of tracking radar is of great value and significance to the realization and the performance improvement of tracking radar.