| 交流电阻焊动态功率因数的实时解析算法 |
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| 引用本文： | 贡亮,刘成良.交流电阻焊动态功率因数的实时解析算法[J].上海交通大学学报,2006,40(6):884-888. |
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| 作者姓名： | 贡亮 刘成良 |
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| 作者单位： | 上海交通大学,机电控制研究所SMC技术中心,上海,200030 |
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| 基金项目： | 日本东京气动株式社(SMC)为本研究项目 |
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| 摘 要： | 基于对交流电阻焊焊接变压器初级回路电压、电流信号的建模分析,提出电流过零导数比法测量电阻焊动态功率因数.采用微型Rogowski线圈直接检测电流过零导数,并在以DSP为核心的点焊质量实时监控系统中实现了动态功率因数的实时计算.电流导数信号实时检测技术和数学模型的简洁解析表达形式同时保证了该算法良好的实时性.试验结果证明,该算法是有效的.
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| 关 键 词： | 电阻焊 动态功率因数 过零导数比法 微型Rogowski线圈 |
| 文章编号： | 1006-2467(2006)06-0884-05 |
| 收稿时间： | 2005-07-25 |
| 修稿时间： | 2005年7月25日 |
The Analytic Algorithm for Real-time Calculating the Dynamic Power Factor in AC Resistance Welding |
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| GONG Liang,LIU Cheng-liang.The Analytic Algorithm for Real-time Calculating the Dynamic Power Factor in AC Resistance Welding[J].Journal of Shanghai Jiaotong University,2006,40(6):884-888. |
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| Authors: | GONG Liang LIU Cheng-liang |
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| Institution: | SMC Technique Centre, Mechatronics Inst. , Shanghai Jiaotong Univ. , Shanghai 200030, China |
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| Abstract: | On the basis of modeling and analysis of the voltage and current signal in resistance welding transformer circuit,a current zero-crossing derivative ratio method was proposed to calculate the dynamic power factor online.Miniature Rogowski coil was used to directly measure the current zero-crossing derivatives.The power factor real-time calculation was performed on a DSP-based resistance spot welding monitor and control system.Unique picking-up technique for the current derivative signal and succinct analytic expression in the calculating model ensure that the method possesses a high real-time computational performance.The experimental results show the feasibility of this method. |
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| Keywords: | resistance welding dynamic power factor zero-crossing derivative ratio method miniature Rogowski coil |
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