内接触式管道测径装置与数据拟合方法  

Internal-contact-type Pipeline Diameter Detector and Data Fitting Method

作　　者：迎春[1] 刘艳辉[2] 张春友[1] 

机构地区：[1]内蒙古民族大学 [2]鄂尔多斯职业学院

出　　处：《工具技术》2017年第11期127-129,共3页Tool Engineering

基　　金：内蒙古自治区自然科学基金(2016MS0622;2016MS0550)

摘　　要：为了对油气管道内的变形情况进行高精度检测,基于磁敏元件感应弹性检测杆绕轴转角的原理设计了内径检测杆,并研制了新型的内接触式管道测径装置。提出采用二次余弦模型拟合转角与管径之间的数据处理方法,可降低测径拟合残差和提高拟合精度。拟合试验表明,该方法可保证测径拟合残差百分比降至0.5%以下。In order to measure the internal deformation of gas-oil pipelines with high accuracy, by using magneto sen- sots to measure the rotating angle of the elastic measuring bar, an internal diameter measuring bar is designed, and a new internal-contact-type pipeline diameter detector is developed. The quadratic cosine fitting method for relating the rotation angle to the pipeline diameter is put forward to reduce the fitting residual error and increase the fitting precision. The fitting experiments show that the fitting residual percentage can be reduced to be below 0.5%.

关 键 词：油气管道 内径测量 磁敏元件 二次余弦模型拟合 残差 

分 类 号：TH711[机械工程—测试计量技术及仪器] TG839[机械工程—仪器科学与技术]