| 摘要: |
| 针对微型零件对焊接电源的特殊要求,设计了一种基于晶体管的高频开关式电阻点焊电源,提高了电阻点焊电源控制的精密性.文中主要介绍了电阻点焊电源的主电路结构、工作原理以及以dsPIC30F6010为核心的控制系统的设计.将电阻点焊电源的开关频率提高到100kHz,从而提高了系统的控制精度和响应速度,获得了理想的焊接电流波形.通过与其它微型零件点焊电源的电流输出特性对比.结果表明,该电源具有精密零件焊接的独特优势,是一种理想的精密焊接电源. |
| 关键词: 晶体管式 电阻点焊 dsPIC30F6010 电源 |
| DOI： |
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| Design of transistor-style high-frequency resistance spot-welding power supply |
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CAO Biao, WANG Xiaodong, FAN Fengxin, LI Jianguo
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College of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
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| Abstract: |
| According to the special requirements of micro-part resistance spot welding technics, a transistor-style high-frequency power supply was designed, which could improve the control precision of the power. The main circuit structure, the working principle, and the controlling core dsPIC30F6010 were introduced. The 100 kHz frequeney was applied for the first time in the resistance spot-welding power supply field, as a result, the control accuracy and response speed were greatly increased, and the welding current waveform were excellent. It is proved that this power supply has a unique advantage in precise welding and is more adaptive, compared with other micro-part welding powers supply. |
| Key words: transistor-style resistance spot-welding dsPIC30F6010 power supply |
