Keywords：Resolver；AD2S1200；STM32
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Байду номын сангаас 2013 届本科毕业设计论文
目录
第一章 旋转变压器..................................................................................................5
1.2.1 环形变压器式旋转变压器................................................................................... 5 1.2.2 磁阻式旋转变压器............................................................................................... 6 1.3 正余弦旋转变压器的工作原理...................................................................................... 6 1.4 旋转变压器与光学编码器比较...................................................................................... 8 1.5 旋转变压器的应用.......................................................................................................... 9
第三章 控制器 STM32F103RBT6........................................................................ 14
3.1 STM32F103RBT6 概述.................................................................................................. 14 3.2 SPI 接口...........................................................................................................................14 3.3 USART 接口................................................................................................................... 15
第二章 解码芯片 AD2S1200.................................................................................10
2.1 AD2S1200 主要特性...................................................................................................... 10 2.2 AD2S1200 功能管脚...................................................................................................... 11 2.3 AD2S1200 串行接口...................................................................................................... 11 2.4 AD2S1200 与旋转变压器连接...................................................................................... 12
4.2.1 AD2S1200 接口电路........................................................................................... 17 4.2.2 AD2S1200 缓冲电路........................................................................................... 18 4.2.3 AD2S1200 与旋变接口电路............................................................................... 19 4.3 控制部分电路设计........................................................................................................ 19 4.3.1 STM32F103RBT6 控制主电路........................................................................... 20 4.3.2 晶振、复位、JTAG 调试电路...........................................................................20 4.3.3 RS232 通讯接口...................................................................................................20
题目： 旋转变压器解码电路设计
学院 专业 年级 学号 姓名 指导老师
信息科学与工程学院 电气工程及其自动化
2009 级 0915312035
姚宏轩 郭新华
2013 年 5 月
2013 届本科毕业设计论文
摘要
旋转变压器应用于运动伺服控制系统中，作为角度位置的传感和测量用，其输出是随 转子转角作某种函数变化的电气信号。和光学编码器相比，旋转变压器有着无可比拟的可 靠性，可以运行在更高的转速下，并且其输出是绝对值信号，可以克服相对式位置测量带 来的弊端。其在军事以及航天、航空、航海等方面有着不可替代的位置。但旋转变压器输 出的是模拟量，其信号处理电路复杂，价格昂贵，导致其应用受限。但随着技术的进步， 旋转变压器专用解码芯片（R/D)的出现，改变了这一现状。本文将对旋转变压器的结构和 工作原理进行分析，了解其基本的电气特性，然后围绕旋转变压器解码专用芯片 AD2S1200 和主控芯片 STM32F103RBT6 设计硬件电路，对旋转变压器输出的两路代表角度位置的电 压信号进行解码，主控芯片通过 SPI 接口采集 AD2S1200 的解码值，从而获得当前旋转变 压器的位置和速度信息。
1.1 旋转变压器的分类和用途.............................................................................................. 5 1.2 旋转变压器的结构.......................................................................................................... 5
关键词：旋转变压器；AD2S1200；STM32
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2013 届本科毕业设计论文
ABSTRACT
Resolver is used in servo motion control system as a way to sense or measure position. Its output is some kind of electrical signal which is a function of the rotor position. Compared with optical encoder, the resolver has a much better reliability. It can work in higher speed rate, and also, its output signal is absolute, so that it can overcome the disadvantages of the relative position measurement. It is irreplaceable in the military and aerospace, aviation, navigation and so on. However, the output signal of the resolver is analog quantity, and its signal processing circuit is very complicated and expensive. This limits the application of the resolver. With the development of technology and the appearance of the monolithic R/D converter, this situation has changed. This article will analyse the structure and working principles of the resolver, so as to understand its basic electrical characteristics. Then we will design the decoding circuit based on the R/D conveter AD2S1200 and the main controller STM32F103RBT6. The decoding circuit will decode two channels output electrical signal of the resolver which represents the position of the rotor. The main controller uses SPI interface to collect the decode value of AD2S1200 to obtain the position and speed information of the resolver.