| Summary: | 碩士 === 逢甲大學 === 自動控制工程所 === 99 === The thesis develops PC-based control programs and the human-machine interface programs for the welding station of a high pressure micro-cylinder filling equipment. The main architecture of the control system is divided into three parts. First, the software is developed by using LabWindows/CVI development tools. LabWindows / CVI is an ANSI C integrated development environment that provides graphical user interface development tools and uses Call Back to trigger events to perform user interface functions generated by the call. The second part is data acquisition. This study uses the NI DAQ X Series NI PCIe-6341 acquisition card to achieve control of welding and to read welding data. Finally, We transmit of the welding parameters with the Miyachi ISA-2000CR inverter power supply, the transmission mode is based on RS-485.We can also be transmitted through the RS-485 to achieve the purpose of adjusting the welding parameters in the man-machine interface.
The resistance spot welding technology is used to weld the high pressure micro-cylinder. Positive and negative electrodes exposure to pressure and power, the position makes slightly softening and melting between cover and cylinder at the contact point because instantaneous high current and high temperature, this time exerted by the pressure sufficient to weld together. The positive electrode moves in a straight line by the hydraulic cylinder to contact the negative electrode and exerts pressure. The hydraulic cylinder is controlled by the PC through the NI PCIe-6341 DAQ card via a proportional valve. The HMI is designed to meet the needs of users.
|
|---|
