在线测量系统测头误差补偿技术研究

鞠萍华; 黄洛

doi:10.13433/j.cnki.1003-8728.2018.0113

在线测量系统测头误差补偿技术研究

doi: 10.13433/j.cnki.1003-8728.2018.0113

鞠萍华,
黄洛

1.
重庆大学机械工程学院, 重庆 400044

基金项目:

国家自然科学基金项目（51575070）与国家科技重大专项项目（2013ZX04011-013，2013ZX04012-051，2014ZX04001-031，2016ZX04004005）资助

详细信息

作者简介:
鞠萍华(1974-),副教授,博士,研究方向为数控机床可靠性增长技术、机械设备状态监测与故障诊断,jupinghua@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2016-08-20
- 刊出日期: 2018-01-15

Research on Error Compensation of Probe for On-line Measurement System

1.
College of Mechanical Engineering, Chongqing University, Chongqing 400044, China

摘要

摘要: 通过分析在线测量系统测量过程中触发式测头测量结果的误差组成元素及其产生的原因，建立了测头标定的数学模型，并通过最小二乘法进行解算，提出通过对测头半径进行补偿来减小测量误差的新方法，该补偿方法综合考虑了实际测量过程中测头预行程误差、测头各向异性、测头偏心误差等影响因素，并利用双线性插值法建立测头半径补偿值与测点法矢方向之间的映射关系，来计算拟合任意法矢方向的半径补偿值。最后通过实验验证，对比补偿前后的测量结果，结果表明补偿后的测量系统测量精度有明显提高。
- 在线测量 /
- 测头半径 /
- 数学模型 /
- 测量误差 /
- 误差补偿
Abstract: In this paper, the error components and the causes of the trigger probe measurement results in the on-line measurement system is analyzed, and the mathematical models for the probe calibration which is calculated by the least square method is established. To reduce the measurement error by the probe is put forward, which has considered the pre travel error, the anisotropy of the probe, probe eccentric error and other influence factors, and using bilinear interpolation method to establish the mapping relationship between the compensation value of the radius of the probe and the normal direction of the measuring point, to calculate the radius compensation value of the fitting of any normal vector direction. Finally, the measurement results show that the measurement precision of the compensation measurement system is greatly improved after the experiment.
- on-line measurement /
- probe radius /
- mathematical models /
- measurement errors /
- error compensation

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参考文献(15)

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