摘要
传统方法在距离测量点247~256 mm的范围内,存在示值误差较大的问题,因此提出基于蒙特卡洛法的外径千分尺测量误差校准方法。将外径千分尺做成UGS模型,将其导入CAE软件中进行处理,构建外径千分尺的有限元分析模型。采用蒙特卡洛法构建测量力变化时的振动误差模型,通过该模型对外径千分尺测量误差进行分析。通过两规校准补偿方法对外径千分尺测量误差进行补偿,从而实现误差校准。实验结果表明,在距离测量点247~256 mm的范围内该方法的示值误差小于其他方法,能够有效提升误差校准效果。
The traditional method has the problem of large indication error in the range of 247~256 mm from the measuring point. Therefore, a calibration method of measuring error of outer diameter micrometer based on Monte Carlo method is proposed. The UGS model of the outside micrometer is made and imported into the CAE software for processing, and the finite element analysis model of the outside micrometer is constructed. The vibration error model of measuring force change is constructed by Monte Carlo method, and the measurement error of external micrometer is analyzed by this model. Through the two gauge calibration compensation method, the measurement error of the external micrometer is compensated, so as to realize the error calibration. The experimental results show that the indication error of this method is smaller than other methods in the range of 247~256 mm from the measuring point, which can effectively improve the error calibration effect.
作者
李明
Li Ming(Kaifeng Quality and Technology Supervision,Inspection and Test Center,Kaifeng 475000,China)
出处
《电子测量技术》
北大核心
2021年第5期24-28,共5页
Electronic Measurement Technology
关键词
蒙特卡洛法
外径千分尺
测量误差校准
CAE软件
有限元分析
Monte Carlo method
outside micrometer
measurement error calibration
CAE software
finite element analysis
