基于单片机的超声电机驱动器研制+文献综述
关键字：超声电机，直接数字频率合成（DDS），驱动技术
毕业设计说明书（论文）外文摘要
Title Microcontroller-based Ultrasonic Motor-driven develop
Abstract
Ultrasonic motor (USM) is a typical mechatronic product. It has many advantages such as low-speed torque, fast response, free from electromagnetic interference,etc. But these advantages need excellent performance drivers to enable it to fully play. In this paper, the main contents is to analysis the principle for the USM equivalent circuit and propose a more appropriate application circuit scheme. In the design process, the whole system is pided into three big modules: the signal source, power amplifier , the and the controlling. Each module needs analysis the more common application circuit. In this program using DDS chip as the main chip to design the signal source. MCU were used to load the control words and change the output frequency, phase andother parameters. Since this issue is designed for high-power USM. it is need boost circuit. This paper will give the relevant drive circuit design and production process.
Key words:Ultrasonic Motor ，DDS ， drive technology
目 录
1 绪论 1
1.1 超声电机的概述 1
1.1.1 超声电机的发展史 1
1.1.2 超声电机的特点 2
1.1.3 超声电机的应用 3
1.1.4 超声电机的驱动技术 3
1.2 课题背景及主要内容 4
2 电机驱动设计方案的选择 6
2.1 信号发生器电路 6
2.1.1 多谐振荡器 6
2.1.2 压控振荡器 7
2.1.3 直接数字频率合成器 7
2.2 基于DDS的正弦信号发生电路方案选择 9
3 超声电机驱动的硬件构成及设计分析 11
3.1 基于DDS的正弦信号发生电路 11
3.1.1 DDS芯片及其工作原理 11
3.1.2 DDS总体电路设计 13
3.2 正弦波的调理电路和升压电路 15
3.2.1 调理电路 15
3.2.2 升压电路 17
3.3 电机运转的控制模块设计 18
3.3.1 电机转速控制的实现 18
3.3.2 辨相电路及正反转的实现 19
3.3.3 温度过高警报 21
3.3.4 显示电路 21
3.3.5 通讯电路 22
3.4 PCB的设计与制作 23
3.4.1 电源滤波去耦及地线布置 23
4 超声电机驱动的软件构成及设计分析 25
4.1 正弦波的产生 26
4.2 数码显示程序 27
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