基于单片机的数字化焊接电源控制系统研究(含CAD图)

基于单片机的数字化焊接电源控制系统研究(含CAD图)(任务书,开题报告,论文说明书13200字,CAD图2张)
摘要
数字化是弧焊电源长期以来的发展趋势，其中最关键的是控制器的数字化。大部分数字产品的价格目前市场上都比较高，因此经济型数字式弧焊电源控制器的设计和实现常是采用STM32系列单片机来进行的。在实用性方面添加了相应的数字化显示和按键精确控制的功能。此外，还对后期的扩展做了相应的处理，用户可以根据自己的使用需要方便的通过对硬件电路的扩展和控制器的程序修改来实现不同的功能，电弧焊作为现代金属加工中被广泛采用的技术手段，一直以来都在我国的国民经济中发挥着重要的作用，为了更好的实现电弧焊，对于稳定的电源研究必不可少，随着众多人员的不断努力，目前取得了长足的进步。先进的弧焊电源是焊接工艺和焊接工艺自动化的必要条件。
单片机控制TIG焊接电源是本文的主要研究对象，以STM32F103ZET6单片机为控制器核心展开设计，通过使用单片机输出控制信号来实现对电流输出进行精确的控制，具体来说是对峰值电流和基本电流进行调节，在峰值电流的输出控制中，若选的是脉冲TIG焊，单片机系统中的相关元件对于峰值电流将进行采样，将采样得到的模拟信号通过模数转换元件转换为单片机可以处理的数字信号。同理，对于基本电流值的输出，单片机采用的也是相应的处理方案，保证基本电流可以稳定输出。另外，对于基本电流与峰值电流的输出控制两者之间的切换功能主要是通过单片机自带的定时器功能实现的。 [资料来源：http://Doc163.com]
软件工作流程：由DAC采集弧压，反馈给单片机后进行程序判断，通过I/O端口来调节焊接电流的大小，从而实现对电路的控制。模拟实验的测试方法：用示波器测试出电路波形图，以验证设计的可行性。从而实现数字化焊接电源的控制实验。实验结果表明该系统拥有结构简单、工作可靠、抗干扰能力强等特点，能够满足设计要求。
关键词：弧焊电源  数字化  单片机  控制系统
 
Research on Digital Welding Power Supply Control System Based on Single Chip Microcomputer
Abstract
Digitalization is a long-term trend in the development of arc welding power supplies. The most critical of these is the digitization of controllers. The price of most digital products is relatively high in the current market, so the design and implementation of the economical digital arc welding power controller is based on STM32 series microcontrollers. In terms of practicality, the corresponding functions of digital display and button precise control have been added, and in addition, they have also been dealt with in the later period. The user can conveniently extend the hardware circuit and controller according to his own needs. The program modification to achieve different improvements, arc welding as a widely used technical means in modern metal processing, has always played an important role in the national economy of our country, in order to better achieve the implementation of arc welding, for stability The study of supply power is indispensable, and with the constant efforts of many people, great progress has been made. Without an advanced arc welding power source, it becomes difficult to automate advanced welding processes and welding processes.

[资料来源：http://www.doc163.com]

The TIG welding power supply controlled by the single-chip microcomputer is the main research object of this design. This design is designed with the STM32F103ZET6 microcontroller as the main controller. The output control of the current output is achieved through the use of a single-chip output control signal, specifically, the current. The peak current and reference current are adjusted to provide a stable 50KHz pulse signal to the system with the help of the peak pulse switch. When the peak current output is controlled, if the pulsed TIG welding is selected, the peak current for the welding output will be controlled by the MCU. The relevant components in the system sample the current at high frequencies and convert the sampled analog signal to a digital signal that can be processed by the microcontroller via an analog-to-digital conversion element. Similarly, for the output of the reference current value, the MCU adopts a corresponding processing scheme to ensure that the reference current can be stably output. In addition, the switching function between the reference current and the peak current output control is mainly performed by the single-chip microcomputer. The timer function is implemented.
The main working principle after the system design is completed is as follows. Firstly, the arc voltage is collected by the DAC and fed back to the MCU for program judgment. The size of the welding current is adjusted through the I/O port to control the circuit. At the same time, the waveform of the circuit is shown by using an oscilloscope. In order to achieve the paper title, digital arc welding power control. The results show that the system has the characteristics of simple structure, reliable operation and strong anti-interference ability, which can meet the design requirements.
Keywords: arc welding power source；digitization；singlechip；control system
 

[资料来源：Doc163.com]
目 录
摘要    Ⅰ
Abstract    Ⅱ
第一章 绪论    1
1.1 课题研究目的与意义    1
1.2 数字化弧焊电源国内外研究现状    2
1.2.1 数字化弧焊电源国内研究现状    2
1.2.2 数字化弧焊电源国外研究现状    3
1.3 本文的研究内容    6
第二章 单片机数字化控制系统概述    7
2.1 单片机数字化控制系统概述    7
2.2 单片机数字化控制系统各部分概述    7
2.2.1 单片机数字化控制部分    7
2.2.2 LED显示部分    8
2.2.3 I/O口部分    8
2.2.4 输入电源部分    9
2.3 本章小结    9
第三章 单片机数字化控制系统硬件设计    10
3.1 单片机数字化系统硬件综述    10
3.2 单片机主电路设计    10
3.2.1 供电电源部分设计    10
3.2.2 LED显示部分设计    11 [来源：http://Doc163.com]
3.2.3 输入部分设计    11
3.2.4 输出部分设计    12
3.2.5 数模转换部分设计    13
3.2.6 光电耦合电路部分设计    13
3.3 本章小结    14
第四章 单片机数字化系统软件设计    15
4.1 系统主程序设计    15
4.2 扫描程序设计    16
4.3 显示程序设计    17
4.4 输入输出程序设计    18
4.5 数模转换程序设计    19
4.6 本章小结    19
第五章 调试与实验    20
5.1 软件调试    20
5.2 硬件调试    20
5.3 联机仿真调试    22
5.4 本章小结    24
第六章 经济性分析    25
结论    26
参考文献    27
致谢    30 [来源：http://www.doc163.com]