Operating System Of Narrow-GAP Welding Based On DSPIC30F6011A

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.