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铝合金熔化极惰性气体保护焊(MIG)的亚射流过渡方式具有弧长调节作用强、焊缝成形美观的优点.本文从非线性动力学近似熵测度的角度对铝合金脉冲MIG焊的电弧电压信号进行分析,进而评价自适应控制模式针对亚射流过渡方式的适用性;讨论在自适应控制模式下,改变工艺参数和熔滴过渡方式时,近似熵值的变化;并对比自适应控制与普通脉冲控制在射滴过渡方式下的近似熵值大小.结果表明近似熵越小,自适应控制越成功,控制越有效.
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关键词:
- 自适应控制 /
- 亚射流过渡 /
- 熔化极惰性气体保护焊(MIG) /
- 近似熵
The meso-spray transfer of Al-alloys metal inert-gas (MIG) welding has the advantages of well-adjusting of the length of arc and beautiful appearance of weld due to the characters of droplet transfer. In this study, the self-adapting control which is brought to meet the arc of meso-spray transfer is accessed by analyzing the approximate entropy (ApEn) of the arc voltage on the aspect of non-linear dynamics. Under self-adapting control, the change of ApEn value with the varing metal transfer mode is discussed, which is due to the change of the parameter of process. Under spray transfer, two kinds of ApEn values of the self-adapting control and common pulsed control are compared, and we find that the self-adapting control is fit for meso-spray transfer. The results show that the smaller the value of approximate entropy is, the better the effect of the self-adapting control is.-
Keywords:
- self-adapting control /
- meso-spray transfer /
- metal inert-gas welding /
- approximate entropy
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[13] Pincus S M 1995 Chaos 5 10
[14] Huang J K, Shi Y, Nie J, Fan D 2010 Trans. China. Weld. Inst. 31 101 (in Chinese) [黄健康、石 玗、聂 晶、樊 丁 2010 焊接学报 31 101]
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[1] Zuo D G, Li F, Hua X M, Wu Y X 2007 Electr. Weld. Mach. 37 1 (in Chinese) [左敦桂、李 芳、华学明、吴毅雄 2007 电焊机 37 1]
[2] Yang L J, Li Z Y, Li H, Li J Y 2009 Trans. China Weld. Inst. 30 17 (in Chinese) [杨立军、李志勇、李 桓、李俊岳 2009 焊接学报 30 17]
[3] Yi Z P, Xue J X 2002 J. S. China Univ. Technol. (Nat.& Sci.) 30 23 (in Chinese) [易志平、薛家祥 2002 华南理工学报 30 23]
[4] Wu F S, Lu Z L, Liu Z F, Li Z Y, Jiang Y Q 2004 China Mech. Eng. 15 621 (in Chinese) [吴丰顺、鲁中良、刘志福、李志远、姜幼卿 2004 中国机械工程 15 621]
[5] Wang Y, Wang B 2008 Chin. J. Mech. Eng. 43 50 (in Chinese) [王 勇、王 宝 2008 机械工程学报 43 50]
[6] Quan W L 2004 Mech. Eng. Autom. 21 10 (in Chinese) [权旺林 2004 机械工程与自动化 21 10]
[7] Huang L Y, Wang Y M, Liu J P, Wang J 2004 Proceedings of the 26th Annual International Conference of the IEEE EMBS, San Francisco, USA September 1—5, 2004 4537
[8] Wang Q G, Zhang Z P 2008 Acta Phys. Sin. 57 1976 (in Chinese) [王启光、张增平 2008 物理学报 57 1976]
[9] Li Q, Wang T Y, Leng Y G, He G Y, He H L 2007 Acta Phys. Sin. 56 6803 (in Chinese) [李 强、王太勇、冷永刚、何改云、何慧龙 2007 物理学报 56 6803]
[10] Cao B, Lü X Q, Zeng M, Wang Z M, Huang S S 2006 Acta Phys. Sin. 55 1696 (in Chinese) [曹 彪、吕小青、曾 敏、王振民、黄石生 2006 物理学报 55 1696]
[11] Xu F R, Yang L J, Li H, Ma C 2009 J. Tianjin Univ. 42 855 (in Chinese) [许芙蓉、杨立军、李 桓、马 闯 2009 天津大学学报 42 855]
[12] Yang L J, Li Z Y, Li H, Li J Y 2006 China Patent 1 0013407.3
[13] Pincus S M 1995 Chaos 5 10
[14] Huang J K, Shi Y, Nie J, Fan D 2010 Trans. China. Weld. Inst. 31 101 (in Chinese) [黄健康、石 玗、聂 晶、樊 丁 2010 焊接学报 31 101]
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