51单片机驱动压电陶瓷程控高压电源设计+电路图

摘要本课题设计了一种用于干涉仪中驱动压电陶瓷的程控高压电源。在干涉测试中，利用压电陶瓷位移与其两端电压呈近似线性关系的原理，通过控制压电陶瓷两端电压来控制其位移的方法，达到控制光程的目的。本文设计的系统，通过PC机发送控制命令，来控制输出高压的电压值。31371
本设计以TSMC公司的STC8051单片机作为控制芯片，通过串行接口接收PC机指令，控制ADI公司的直接数字频率合成芯片AD9850产生正弦波，通过增益控制电路控制输出幅度，再经过升压变压器和整流电路，产生所需要的高压。系统采用模块化设计，主要有单片机控制模块、RS-232串口模块、DDS系统模块、升压模块等。根据功能需求编制了论文中相关软件，给出了软件流程图。
整个电源系统，输出波形精度高，对电压幅度参数改变的响应速度快，主要技术指标符合要求。
关键词单片机直接数字频率合成串口通信   增益控制
毕业论文设计说明书外文摘要
Title          Programmable High Voltage Power Supply
Abstract
This paper is designed for a programmable high voltage power which is used to drive the piezoelectric ceramic of the interferometers. In the interferometric test, we uses the nearly linear relation between the displacement of the piezoelectric ceramics and the voltage to control the displacement and the voltage of the piezoelectric ceramics.Finally achieves the purpose to control the optical distance. This paper designs a system which controls the high-voltage output via the control command sent by PC.
This design uses the microcontroller STC89C51 which produced by Company TSMC as control chip.By receiving control command which sent by PC, this design produces sinusoidal wave by taking control of DDS chips AD9850 which designed by Company ADI.The design controls the output via the gain control circuit and produce the needed high-voltage through the boosting transformer and the rectification circuit.This system uses a modular design which includes microcontroller control module，RS-232 serial communications module，DDS system module and high voltage power module.This paper compiles related softwares according to requirements of the function and provides software flow diagram.
The power system possesses an exact output waveform and a rapid-response voltage amplitude parameters and conformances to requirements of technology parameters.
Keywords microcontrollers DDS Serial port communication gain control
目   次
1 绪论    1
1.1 研究背景和意义    1
1.2 相关技术介绍    2
1.3 主要研究内容    4
2 方案论证    5
2.1 程控电源的技术指标    5
2.2 系统总体框图    5
2.3 单片机的选择    6
2.4 串口通讯方案的选择    7
2.5 DDS方案的选择    7
2.6 升压整流方案的选择    10
2.7 PC控制方案的选择    11
3 硬件设计    13
3．1 STC89C51单片机控制模块设计    13
3．2 RS-232串口通信模块设计    15
3．3 DDS模块设计    17
3．4 升压整流模块设计    21
3．5 总电路图    22
4 软件设计    23
4．1 电压控制程序设计    24
4．2 DDS芯片驱动程序设计    27
4．3 PC和单片机通信协议    29 51单片机驱动压电陶瓷程控高压电源设计+电路图:http://www.751com.cn/tongxin/lunwen_27512.html