| 波形控制功率负反馈YAG激光焊接机的设计 |
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| 引用本文： | 牛增强,彭文达,牛憨笨. 波形控制功率负反馈YAG激光焊接机的设计[J]. 激光技术, 2008, 32(4): 406-409 |
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| 作者姓名： | 牛增强 彭文达 牛憨笨 |
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| 作者单位： | 中国科学院,西安光学精密机械研究所,西安710068;深圳大学,光电子学研究所,深圳,518060;深圳大学,光电子学研究所,深圳,518060 |
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| 摘 要： | 为了提高激光焊接机激光输出的能量稳定度,采用了在输出端加激光功率检测装置并将其实时信号反馈到控制端,形成一个闭环控制系统的控制方法,进一步提出了在激光功率负反馈信号中加入相位补偿信号以达到提高激光能量控制精度的目的.同时,在激光焊接机软件设计上加入了激光能量波形控制功能,以拓宽激光焊接加工的应用领域.与传统的激光电流负反馈的能量波动为8%以上相比,采用功率负反馈可使激光能量波动控制在3%以内.实验结果表明,选择激光功率波形,可以改善焊接质量.
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| 关 键 词： | 激光技术 功率负反馈 相位补偿 激光能量 激光焊接 任意波形控制 |
| 收稿时间： | 2007-05-29 |
Design of YAG laser welders controlled with pulse wave shaping and laser power feedback |
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| NIU Zeng-qiang,PENG Wen-da,NIU Han-ben. Design of YAG laser welders controlled with pulse wave shaping and laser power feedback[J]. Laser Technology, 2008, 32(4): 406-409 |
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| Authors: | NIU Zeng-qiang PENG Wen-da NIU Han-ben |
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| Affiliation: | NIU Zeng-qiang1,2,PENG Wen-da2,NIU Han-ben2(1.Xi'an Institute of Optics , Precision Mechanics,Chinese Academy of Sciences,Xi'an 710068,China,2.Institute of Optoelectronics,Shenzhen University,Shenzhen 518060,China) |
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| Abstract: | In order to improve the stability of the output power of the laser welder,a rear optical detector was installed to feedback the output laser power signal to the control unit,making a closed loop control system.Also,a phase compensation signal was added to the laser power signal to increase the control accuracy.In addition,the control function of pulse wave shaping was used to extend the application of the laser welder.Experiments showed that the laser power fluctuation was less than 3%.Compared with 8% lase... |
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| Keywords: | laser technique power feedback phase compensating laser energy laser welding pulse-shaping control |
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