摘要编码器是数字式传感器中最重要、最基础的结构形式之一。它是将机械运动中转速、位移、转角等物理量转变为数字脉冲化电信号的一类传感器件。它与数字处理技术和计算机技术相结合，可实现快速、及时、准确的检测与控制。目前常用的主要有光电编码器、磁编码器、感应同步器等。与其他编码器相比，磁旋转编码器具有成本低廉、体积小、结构简单、功耗低、精度高、抗干扰强等特点，近年来在高精度测量和控制领域中，磁编码器已经成为不了缺少的组成部分。65025

随着机械设备自动化程度的提高，磁编码器的应用领域也越来越广泛，人们对磁编码器的要求也越来越高，除了磁编码器现有的同步串行接口(SSI)输出、脉宽调制输出(PWM)和增量模式输出以外，还要求能出现更丰富的接口方式，使其能够与更多的设备实现通讯。本文介绍一种磁编码器的设计与实现，该磁编码器能提供多种工业标准的信号输出，其灵活的设计，使得其能够应用在更多的领域。

毕业论文关键词  磁编码器  SSI  PWM  接口  

毕业设计说明书（论文）外文摘要

Title   Design And Test of A Magnetic Encoder  

Abstract

Encoder is one of the most important and fundamental structure forms in the family of digital sensor. It is a type of sensing device that can convert physical quantity, such as speed、shift、angle in mechanical movement, into digital pulse electric signals. In combination with digital processing technology and computing technology, it can achieve the goal of fast and accurate detection and control. At present, photoelectric encoder、magnetic encoder and inductosyn are the most commonly used. In comparison with other encoders, magnetic encoder has the features of low cost、small size、simple construction、low power dissipation、high precision and strong anti-interference. So it has become an integral part in the area of   high-accuracy measurement and control in recent years. 

With the improvement of automation degree in the area of mechanical equipment, magnetic encoder has been used in more and more places. And people make more requests on it. In spite of the SSI output, PWM output and incremental output, people ask for more interfaces. So it can communicate with more equipment. In this article, I introduce the design of a magnetic encoder. It can offer a few types of outputs which meet industry standard. Because of this, it can be used in more areas.

Keywords  magnetic encoder  SSI  PWM  interface  

目   次

1 绪论 1

1.1 课题的背景及研究意义 1

1.2 磁编码器的应用 1

1.3 磁编码器的发展前景 2

1.4 论文的主要工作 2

1.5 论文的组织结构安排 3

2 磁编码器的设计基础 4

2.1 AS5145的结构和工作原理 4

2.2 角度输出模式 5

2.3 LPC11C24简介 7

2.4 速度计算原理 8

2.5 本章小结 10

3 磁编码器的硬件设计 11