电阻焊变压器优化设计及其控制技术的研究

发布时间：2018-06-21 07:30

本文选题：电阻焊变压器 + 粒子群　；参考：《河北工业大学》2015年硕士论文

【摘要】：电阻焊设备是焊接领域实现焊接自动化的重要设备。随着工业的发展以及现代社会对产品质量要求的不断提高,对电阻焊设备性能和工艺提出了更高要求。但现有电阻焊设备功率因数较低,效率低,难以得到较好的焊接质量。因此研究电阻焊变压器设计及其控制技术,对于提高焊机设备性能,保证焊接质量具有重要意义。论文首先研究了电阻焊设备的电源装置—变压器的设计计算方法,建立了电阻焊变压器的优化数学模型,选取了电阻焊变压器的设计成本作为目标函数,并将粒子群算法和循环遍历法应用于电阻焊变压器的电磁优化设计,编制了相关优化程序。运算结果表明采用优化算法对电阻焊变压器做优化设计可以降低其制造成本。论文研究了电阻焊机变压器的控制技术,电阻焊控制系统包括主电路和控制电路。论文选择晶闸管为主电路的电力开关;设计了以单片机PIC18F4520为核心的控制系统,采用模糊控制算法实现了焊接电流的恒流控制。仿真结果表明模糊控制方法较传统PID方法对焊接电流超调量有较好的控制效果,可以提高焊件的焊接质量。
[Abstract]:Resistance welding equipment is an important equipment to realize welding automation in welding field. With the development of industry and the continuous improvement of product quality in modern society, higher requirements have been put forward for the performance and process of resistance welding equipment. However, the existing resistance welding equipment has low power factor and low efficiency, so it is difficult to obtain better welding quality. Therefore, it is of great significance to study the design and control technology of resistance welding transformer for improving the performance of welding equipment and ensuring welding quality. Firstly, the paper studies the design and calculation method of the power supply device of resistance welding equipment-transformer, establishes the optimization mathematical model of resistance welding transformer, and selects the design cost of resistance welding transformer as the objective function. Particle swarm optimization algorithm and cyclic traversal method are applied to the electromagnetic optimization design of resistance welding transformer. The results show that the optimal design of resistance welding transformer can reduce the manufacturing cost. The control technology of resistance welding transformer is studied in this paper. The control system of resistance welding includes main circuit and control circuit. In this paper, the power switch with thyristor as the main circuit is selected, the control system based on PIC18F4520 is designed, and the constant current control of welding current is realized by fuzzy control algorithm. The simulation results show that the fuzzy control method has better control effect on the overshoot of welding current than the traditional pid method, and it can improve the welding quality of welding parts.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG438.2

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