气缸高精度位移检测方法研究.pdf

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1、液压气动与密t~"／2015-~F-31S'08期doi：lO．39694．issn．1008—0813．2015．08．002大行程油缸／气缸高精度位移检测方法研究桑勇，代月帮，李锋涛，王亚杰，段富海(大连理工大学机械工程学院，辽宁大连116024)摘要：随着液压、气压系统在大型高精密设备上运用越来越广泛，对大行程油缸、气缸输出轴位移的检测精度要求也越来越高。位移传感器是大行程油缸、气缸位移高精度检测的关键，但随着油缸、气缸行程越来越大，检测精度要求越来越高，位移传感器由于主观、客观原因越来越难满足检测要求。该文对常用的大

2、行程位移传感器特点进行了分析与梳理，详细阐述了现行位移传感器对大行程油缸、气缸高精度位移检测所面临的难题，最后提出一种可以实现大行程油缸、气缸高精度位移检测的设计方案，该方案测量精度高、量程大、适应性强、造价便宜。该文可以为大行程、超大行程油缸、气缸高精度位移检测提供参考。关键词：大行程油缸／气缸；大量程位移传感器；高精度；位移检测中图分类号：TH137；TH138文献标志码：A文章编号：1008—0813(2015)08—0004—05ResearchonHigh．．precisionDisplacementMeasure

3、mentMethodforLarge．strokeHydro．cylinder

4、Air-cylinderSANGYong,DA1Yue—bang,LIFeng-tao，WANGYa-jie,DUANFu—hai(SchoolofMechanicalEngineering，DalianUniversityofTechnology，Dalian116024，China)Abstract：Withthehydraulicandpneumaticsystemsusedinthelarge·strokehigh—precisioneq

5、uipmentmorewidely,therequirementofmea—surementaccuracyisgettinghigherandhigherfordisplacementoftheoutputshaftoflarge-strokehydro·cylinder／air-cylinder．Displacementsensoristhekeyforhigh—precisiondisplacementmeasurementoflarge—strokehydro—cylinder／air-cylinder．Butwit

6、hthestrokeofhydro—cyl—inder／air_cy1indermoreandmorelarge，therequirementofmeasurementaccuracymoreandmorehigh，displacementsensorsarebecomingincreasinglydificulttomeetthemeasurementrequirementsduetosubjectiveandobjectivereasons．Inthispaper,firstly,thereisaanalysisabou

7、tthecharacteristicsoflarge—rangedisplacementsensors．Then，thisarticleanalyzestheproblemsthecurrentla唱e-rangedisplacementsensorsfacetoachievehigh-precisiondisplacementmeas~ementoflarge-·strokehydro·-cylinder／air-cylinder．Finally,thispaperproposesasolutiontoachievehig

8、hprecisionmeasurementoflarge，verylargestrokehydro—cylinder／air-cylinder．Thissolutionshowshighermeasuringaccuracy,greaterrange，strongeradaptationandlowercost．Thispapercanprovidethereferenceforhigh—precisiondisplacementmeasure—mentofhydro-cylinder／air-cylinder．Keywor

9、ds：large—strokehydro-cylinder／air-cylinder；large-rangedisplacementsensor；highprecision；displacementmeasurementO引言试验参数，它的测量精度决定试验的成败。在大行程油缸、气缸输出轴位