雷达天线近场测量平面扫描控制系统设计与研制

【作者】 宋献斌；

【导师】 万健如；

【作者基本信息】 天津大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 天线测量是雷达天线研制过程中一项重要的工作，而近场测量技术是近几十年来发展起来的一种先进的天线测量技术，已广泛应用于雷达天线的测试中。航天部二院某所为测试其研制的新型雷达，向北京某公司提出了雷达天线近场测量平面扫描控制系统的设计任务。本课题正是为这项设计任务而研制开发的一项实际工程项目。本课题以INTEL公司的80C196KB单片机和Xilinx公司的FPGA为技术核心设计了系统的硬件电路，采用Visual Basic6.0 设计系统所需要的工作平台，并采用VHDL语言编程实现FPGA所需要实现的功能。为了实现系统各部分之间正常的数据通信，本课题采用了常用的串行通讯和并行通讯技术，并制定了一套完整的通讯协议。针对步进电机运行不平稳及丢步现象，本课题采用10细分方式和PWM方式对步进电机进行控制，最终使测量探头的最大行程误差≤0.025mm。在硬件电路设计和印刷电路板设计过程中，采取一系列措施对系统进行了可靠性设计。系统软硬件设计完成后，完成了对各电路板的功能调试，并在确保电路实现的基本功能后，进行了联调试验。联调试验的结果证明，本课题所设计的系统已满足了设计任务书的要求和实际需要。更多还原

【Abstract】 Antenna measurement is an important work in the course of the development of radar antenna, near-field measurement technology is an advanced antenna measurement technology developed in near several decades, which is used in the testing of radar antenna widely. In order to test its new-type radar, research institute of Aerospace Ministry consign a Beijing company the subject matter which is the design of radar antenna near-field measurement and flat-plane scan control system. This subject is just a practice engineering project developed for this design task. In this subject, we design hardware circuits of the system based on Intel’s 80c196kb single-chip computer and Xilinx’s FPGA, design work console using Visual Basic6.0, and realize the function of FPGA using VHDL language. In order to realize the normal data communication between each part of the system, we adopt serial communication and parallel communication technology, and design the communication protocol. Against the problem of unstable and lose step during the running of stepper motor, this subject adopts ten subdivision mode and PWM mode to control the motor, which realizes the most error of measure probe is under 0.025mm. During the design of hardware circuits and printed circuit board, we take a series of measures to design the reliability of the system. After completing software and hardware designs of the system, we debug the relative functions on each circuit board. After ensuring the functions of each circuit realized, we debug the system. The results of system debug prove that the system has satisfied the request of the task and actual requirements.更多还原