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基于DSP的晶闸管弧焊电源控制系统研究
The Research of SCR Welding Power Source Control System Based on DSP
【作者】 于成奎;
【导师】 于有生;
【作者基本信息】 武汉理工大学 , 材料科学与工程, 2006, 硕士
【摘要】 焊接是一种先进的制造技术,它已从单一的加工工艺发展成为现代科技多学科互相交融的新学科,成为一种综合的工程技术,具有其它连接方法无可比拟的优点,是许多高新技术产品制造不可缺少的加工方法。焊接技术是保证产品质量的基础,其技术水平高低直接影响到产品的质量和使用可靠性。焊接技术已广泛地应用于工业生产的各个部门,在推动工业的发展和产品的技术进步以及促进国民经济的发展都发挥着重要作用 近一个世纪以来,随着电子、信息、自动化、人工智能、新材料为核心的新一代工程技术的迅猛发展,先进制造技术业得到了飞速的发展,给焊接技术注入了新的生机和活力,使其作用得到了淋漓尽致的发挥。在21世纪,焊接技术作为先进制造技术的一个重要组成部分,仍将在制造业中起着极为重要的作用。因此,性能良好、工作稳定的新型弧焊电源的创造是关系到工业发展、产品技术进步和国民经济增长的一个重要条件,也是保证电弧的稳定燃烧和焊接过程的顺利进行,得到良好的焊接接头的基础。 本文围绕数字化弧焊电源进行了一定的研究,在此基础上设计了带平衡电抗器双反星形晶闸管式可控整流电路为主电路,辅之具有不同功能的同步电路与触发电路等外围电路,选用美国TI公司的TMS320LF2407 DSP作为控制系统CPU的单机控制方法,软件开发平台选择CC‘C2000集成开发环境,采用神经网络技术与PID控制相结合的算法进行算法控制,通过智能技术的加盟,在参数的整定和在线自适应调整方面有了显著的优越性。本课题的目的是通过对焊接设备管理、波形给定、闭环控制、控制算法与通信等领域等的整体化设计,实现对电源的外特性与动特性控制以及输出电流、电压波形进行精确控制,提高引弧性能、电弧熔透能力,使熔滴过渡具有合适的推力;获得良好的引弧、燃弧和熔滴过渡状态,能适应手工焊和CO2焊、手工焊等多种焊接方法,保证获得高质量焊接要求。通过试验测试显示,该焊机主电路响应速度快,硬件电路简单可靠,系统软件高效稳定,弧焊电源外特性可以很好的满足手工焊和CO2焊两种焊接方法的要求,基本达到最初的设计目标。
【Abstract】 Welding is an advanced manufacture technique, it is a new subject that developed from single processing technique to many subjects mingled with each other, Become one integration engineering technique that contain unexampled virtues than others connect method and indispensability in many high-tech produce manufacture. Welding technique is the foundation of keeping the quality of products. It’s development level direct affect the quality and reliability of the new produce. Welding technique broad application in each department of industry creative, exert emphasize function in industrial development and production technique progress, as well as hasten country economic development.Nearly one century, the hail development of Electron, Communication, Automatization, Artifical intelligence, new type material etc, advanced manufacture technique quickly developed and thoroughly application since immit new energy into welding technique. In this century, welding technique as one important section in advanced fabrication technique will exert important function. So, the new type welding power that performance well and work steady is thirsted in industry development, production technique processing and economy rise, as well as can ensure arc steady burning and get well welding joint.This thesis do some research in digital welding power source, designed contain balance reactor double reverse star-shape SCR priority circuit, together with synchronization circuit, trigger circuit etc periphery circuit, using TMS320LF2407 DSP made in TI company as the controller system CPU, CC’C2000 as the integration development environment, ANN technique and PID control conjunct as the control arithmetic. The application of aptitude technique embodiment marked superiority in parameter rectify and auto-accommodate. The aim of this thesis is through the whole design in welding equipment management, wave provide etc, realize the control of power source trait, precision control in output current and voltage wave. Enhance the ability of arc-kindling, arc melt ability and appropriate arc-thrust. Gain well
【Key words】 Digital Signal Process; Artificial Neural Networks Controller; Digital Trigger; Welding Power Source;
- 【网络出版投稿人】 武汉理工大学 【网络出版年期】2007年 04期
- 【分类号】TG434.1
- 【被引频次】8
- 【下载频次】399