【作者】 赵运福；

【导师】 刘庆想；

【作者基本信息】 西南交通大学 ， 物理电子学， 2007， 硕士

【摘要】 相控阵天线驱动系统是机械相控阵天线的重要组成部分，它的功能是控制螺旋线单元天线的转动。具体来讲，相控阵天线转动系统需要根据天线波束的扫描方式计算出各单元所需的转动角度，然后通过控制系统控制各路电机的转动，使其达到指定的角度，最后通过传动系统实现电机与螺旋线单元天线的同步运动。本论文首先介绍了研制的背景、指出了其重要意义。接着分析了步进电机的性能及其驱动控制。然后详细介绍了本文工作内容的重点，主要包括：步进电机控制系统中硬件电路的设计、PCB的设计、单片机程序、PC机与单片机的串口通信。我们采用PC机与单片机组成的主从式控制系统。即PC机为主机，分布在现场的各个单片机为从机。其中包括了硬件电路的设计，系统的核心器件为AT89C52单片机，其外围电路包括复位电路、控制电路和通信电路等，给出了电路原理图，讨论了电路设计中注意的问题，并根据原理图制作了电路板。根据电路的功能，设计了单片机程序，由通信、控制部分组成，给出了部分程序设计流程图，并讨论了使用C语言编程的方法和技巧。试验的进程由PC机通过RS485总线控制，PC机计算所得到的数据通过RS485总线送到单片机，进而控制步进电机的运转。本文给出了程序的界面，讨论了单片机与PC机的通信协议。理论与实验结果表明：另外该控制系统模板通用，易于代换；调试维护方便，费用低廉；模板可靠性强；系统易于扩充等优点。满足了机械相控阵列天线的技术要求。更多还原

【Abstract】 The phased array antenna drive is an important part of machinical phased array antenna, whose function is mainly abort controlling the turn of the spiral wine array. Specifically, phased array attenna drive needs the way of antenna bean scan to decide the angle of each unit, and then make the scan at the determined angle through controlling system to measure the muve of each electical machimery. Finally it makes electrical machines and helical antenna work at the same time through turning system. My paper mainly talks about four points. Firstly, it introduced the background of the process. Secondly it pointed out its importance. Thirdly, it analyzed the fuctions and dricing system of stepper motor. At last it introduced my own experiences in detail, including the design of hardware circuit in stepper motor contrulling system,The design of PCB, the programming of MCU, and the crossing communication between PC and MCU.We consist of up-to-down controlling system by PC and MCU. That’s to say, the pc is the host computer, leading every MCU called servicer machine, being acattered around the PC.according to the fuctions of the circuit, I designed th process of programming, consisting with communication and controlling.and a part of programming, and discussed the skill of writing programming by languen C.The progress of this testing is determined by PC through RS485 bus. the data resulted from PC and conveyed to MCU by RS485, and the data control the turn of stepper motor.My paper pointed out the interface of programming and discussed the communication agreement of MCU and PC.According to the results of expertments and the theroy , we come to the following conclusion about this drive system pattern plate: suitable for all styles, easy to replace, easy to set up and test, able to enlarge, cheap and good value , and so on. All above characteristics satisfy the technology need of the phased array antenna drive system.更多还原