【作者】 王志强；

【导师】 兰强；

【作者基本信息】 西南交通大学 ， 材料加工工程， 2011， 硕士

【摘要】 窄间隙焊接技术起始于20世纪80年代,由于它具有较高的焊接生产效率、优良的接头力学性能,较低的残余应力与残余变形等优点,使得窄间隙焊接技术在应用中受到很大的青睐。尤其是在大厚板件的焊接上,国外的窄间隙焊接设备已经有非常广泛的使用。然而在我国,窄间隙焊接的应用明显落后,相应的专有化设备更是甚少。因此对窄间隙焊接方面的研究就变的非常有必要。课题采用C02气体保护焊,以Dspic30F6011a为控制芯片设计一种窄间隙焊接的驱动控制系统,能实现焊接过程的全自动,并可通过触摸屏调节焊枪运行数据参数。具体内容主要包含下面几个部分：(1)了解国内外窄间隙焊接应用现状和前景,以及本课题中窄间隙电焊机的大体外形和相关工艺情况。(2)窄间隙电焊机驱动控制系统。系统以DSPIC30F6011A数字信号控制器为核心,以深圳显控自动化公司的“SA-7”触摸屏为操作界面。总体的系统硬件电路包括：电源部分、单片机控制部分、电机开关驱动部分、连接触摸屏的RS232的接口电路部分、电机转数信号提取部分。(3)程序设计。程序主要包含：基于Modbus协议的触摸屏与DSPIC30F6011A之间USART串行通信模块编程、电机运行程序设计、电机转数信号提取的计数器程序设计、中断以及现场保护程序设计。采用MICROCHIP公司配套的MPLAB-IDE软件,使用汇编语言进行编程。(4)对系统的硬件软件进行调试。通过调试表明,该控制系统基本达到了设计的预期要求：实现了触摸屏与控制系统的有效通讯,以及使用触摸屏控制窄间隙电焊机焊枪运动的设计要求。更多还原

【Abstract】 Narrow gap welding technology start at the 1980s, because of its high welding production efficiency, excellent connector and mechanical performance, low residual stress and residual deformation etc, Narrow gap welding technology has been greatly in favor of the application. Especially in large parts of the welding on thick, narrow gap welding equipment from abroad has been very widely used。However, in our country, the application of narrow gap welding was backward, the corresponding proprietary equipment is even less. Therefore, the research of narrow-gap welding the will become very necessary.Subjects using CO2 gas welding and Dspic30F6011a chip to design a narrow gap welding of driver control systems, which can achieve automatic welding process, and can adjust the data parameters of torch’s run through the touch screen. Specific topics include the following sections:(1) Understanding the current situation and prospects of narrow gap welding applications at home and abroad, as well as the issue in the general shape of narrow gap welding and related processes situation.(2) Narrow gap welding machine drive system. System to DSPIC30F6011A digital signal controller as the core, with shenzhen display control automation of the company’s "SA-7" touch screen for interface. The overall system hardware circuit including:power supply parts and single-chip microcomputer control parts, motor switch drive part, connecting the touch screen RS232 interface circuit part, motor RPM signal extracted parts.(3) The program design. Mainly includes:touch screen and DSPIC30F6011A between USART serial communication module programming based on the Modbus agreement, motor running program design, motor RPM signal extracted counter program design, interrupt and on-site protection program design.The programming use assembly programming language, supporting by MICROCHIP COMPANY’s MPLAB-IDE software.(4) The hardware and software of system debugging. Commissioning show that the control system has basically reached the expected requirements of the design:achieving effective communication between the touch screen and control system, and using the touch-screen control movement of narrow gap welding torch design.更多还原