基于CAN2.0B協(xié)議的雷達(dá)伺服系統(tǒng)的優(yōu)化與設(shè)計(jì)
[Abstract]:Radar servo system is the core equipment for radar reconnaissance of operational targets. Its main function is to drive radar to scan horizontally at various speeds, adjust the pitch angle of radar, and transmit the discovered targets down to radar data processing software. Attitude adjustment of radar reconnaissance equipment in pitch direction and searching fan scan of azimuth target are realized. Based on the analysis of the function and performance of a certain type of reconnaissance vehicle, a digital radar servo system based on CAN2.0 protocol stack is developed to meet the needs of modern information warfare. Based on the analysis of the function and technical index of servo system, this paper designs a reasonable match scheme of high and low performance chips. The main control module is based on TMS320F28335, a special control chip produced by TI Company. This scheme uses RS422 serial port and radar host computer data interaction to realize the transmission of pitch, azimuth data frame and control instruction. At the same time, the information exchange between vehicle and multiple devices is completed by CAN fieldbus. Taking TLC3574IPW as the control chip of the data acquisition module, it is mainly responsible for the data acquisition and processing of the pitching potentiometer and the azimuth photoelectric encoder, and uploads the collected data to the main control module. In this paper, PWM speed regulation motor controller UC1637 and H bridge brushless motor DC drive chip MC33887 are used to drive DC motor rotation. The PID fuzzy control algorithm is used to realize the motion requirement of servo in the direction of fan sweep, cycle sweep, reset and stop. Finally, a special test method is designed for some technical indexes of the system. Radar data processing software, combined with Zhou Ligong CAN card and other on-board equipment, is used to build the system test environment. All modules of the servo system designed in this paper can work normally, and the control performance is very good, which fully meets the requirements of the design.
【學(xué)位授予單位】:南京郵電大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TN95
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