关于焊接的论文

《关于焊接的论文》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、焊接是制造业小不可或缺的一种技术，为了提高焊接质量，提高生产效率,节省人力，国内外焊接工作者一直在不断地采取齐种方法进行研究，以实现焊接过程的白动化。实现焊接过程的H动化关键是研制一套高效率的焊缝白动跟踪系统。焊缝自动跟踪系统由三部分组成：传感器、控制器、执行机构。焊缝跟踪系统屮传感器是最重要的组成部分，应用于焊缝H动跟踪系统屮的传感器主要包括：电子式、光电式、电弧式和电磁感应式。而在焊缝跟踪系统的主要技术是焊缝的检测和控制算法。本论文设计了一套光电传感器式焊缝自动跟踪系统，该系统由光电传感器、控制系统和执行机构等组成。本文通过大量的实验，针对光

2、电传感器在材料表而状态不同时输出信号相差较大而导致跟踪失败的现象，提出采用加权比较的信号处理方法，提高了传感器的精度。在分析前人工作的基础上，本文提出了一种传感器旋转摆动模型。经过理论分析，建立了相应的数学模型，并在此基础上设计了符合系统要求的模糊控制系统。仿真研究表明，该模型不仅简单可靠，而且跟踪精度高。采用模糊控制技术，进一步提高了系统的稳定性与精度。关键词：焊缝跟踪；光电式传感器；模糊控制;AbstractThetechnologyofweldingisabsolutelynecessaryinmanufacturing・Inorderto

3、improvetheweldingqualityandefficiency,andtosavethemanpower,thestudentsofthedomesticandforeignweldingstudycontinuouslyadoptmanykindsofmethodstodevelopweldingresearchsothatimplementtheweldingautomation.Thekeyoftherealizationofweldingautomationisthatahighlyeffectiveweldingseamau

4、tomatictrackingsystemisstudied.Aweldingseamautomatictrackingsystemisthatweldingtorchadjustwarpalongweldingseaminordertothecenterofelectricarcconcentrateonthecenterofweldingseam.Aweldingseamautomatictrackingsystemmainlycontainsthreeparts:sensor、controlsystem>effectivemachine,a

5、ndthesensoristhemostimportantpart・Atpresent,thestudyofweldingseamautomatictrackingsystemisalsobasedonthesensor'schoiceindomesticandabroad.Mainlyincludes:electrictypesensor>electricarctypesensor、electromagnetisminductiontypesensor.Themaintechnologyofthesystemaretestingandarith

6、meticofcontrol.Inthispaper,aseamtrackingsystembasedonphotoelectricsensorwhichconsistedofaphotoelectricsensor,asub-systemofcontrolandexecutivemachineisstudied.Becausetheoutputfromsensorisgreatdifferentunderthedifferentstatesofmaterialsurface,lotsofphotoelectricsensorfailedtose

7、amtracking.Inthispaper,amethodofcomparingthesignalisputforwardafteragreatdealexperiments.Andbythisway,theprecisionofthephotoelectricsensorhasbeengreatimproved.Basedontheanalysisofpreviouswork,asensor-rotatingmodelisputsforwardinthispaper.Theauthorsetupthecorrespondingmathemat

8、icalmodelaftertheoreticalanalysisanddesignedafuzzycontrolsystem.Simu