基于CAN2.0B协议的雷达伺服系统的优化与设计

发布时间：2018-07-25 13:55

【摘要】：雷达伺服系统是对作战目标进行雷达侦察的核心设备,其主要功能是驱动雷达以各种速度进行水平扇扫,并对雷达的俯仰角度进行调整,将发现目标下传至雷达数据处理软件;实现俯仰方向的雷达侦察设备姿态调整及方位目标搜索扇扫。本文结合某型号侦察车,基于对雷达伺服系统的功能及性能指标分析,致力于研制出一种基于CAN2.0协议栈的全数字式雷达伺服系统,以满足现代信息化战争中的使用需求。本文通过对伺服系统功能及技术指标的分析,设计出一种采用高低性能芯片合理搭配的方案:主控模块以TI公司生产的专用控制芯片TMS320F28335为核心,该方案使用RS422串行口与雷达主机之间的数据交互,实现俯仰、方位数据帧及控制指令的传递,同时,通过CAN现场总线完成整车多个设备之间的信息交互;将TLC3574IPW作为数据采集模块的控制芯片,主要负责俯仰电位器、方位光电编码器的数据采集及处理,并将采集到的数据上传给主控模块,本课题中采用PWM调速电机控制器UC1637及H桥有刷电机直流驱动芯片MC33887来驱动直流电机的转动。采用PID模糊控制算法实现对伺服在扇扫、周扫、复位及停止等方向上的动作要求。最后,针对系统的某些技术指标设计了专门的测试方法,采用雷达数据处理软件,结合周立功CAN卡及其它车载设备搭建系统测试环境,经过试验论证,本课题设计的伺服系统各模块均能正常工作,并且控制性能也很好,完全符合本课题的设计的使用要求。
[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.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN95

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