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Alternative TitleThe Calibration of laser triangular displacement sensor Based on nonlinear fitting
崔昊1,2,3; 郭锐1,2; 李兴强1,2; 丛日刚1,2
Source Publication中国激光
Indexed ByEI ; CSCD
EI Accession number20204709509514
Contribution Rank1
Funding Organization国家重点研发计划(No.2018YFB200403) ; 国家自然科学基金(No.61703393) ; 辽宁省自然科学基金项目(No.20180520016)
Keyword传感器标定 多元自适应卡尔曼滤波 非均匀B样条曲线拟合 位置敏感器件 激光三角法

为解决基于位置敏感器件(Position Sensitive Devices, PSD)的激光三角位移传感器在复杂光电噪声干扰下的精密标定问题,提出一种多元自适应卡尔曼滤波(Multivariate Adaptive Kalman Filter, MAKF)与非均匀B样条曲线拟合的联合标定方法。通过分析测量原理和计算方法,对位移传感器的非线性特性进行了详细说明,进而提出应用曲线拟合的方法进行非线性标定。针对曲线拟合的特点,本文设计了一种多元自适应卡尔曼预处理算法用于滤除光电噪声干扰;通过非均匀的节点矢量划分,构建了B样条曲线拟合模型,进一步提高了标定系统的精度。在实际工况下进行了标定实验,实验结果表明,该曲线拟合标定方法能够完成激光位移传感器的高精度标定,其定位精度为0.7%,平均测量误差可达0.012mm,标定均方误差约为2.12×10~(-5)mm~2。

Other Abstract

For the precise calibration of laser triangular displacement detection based on Position Sensitive Devices (PSD) with the influence of complex photoelectric noise, a joint calibration method based on Multivariate Adaptive Kalman Filter(MAKF) and Non-uniform B-Spline is proposed. The nonlinear characteristic of displacement sensor is shown in detail by analyzing the measurement principle and computing methods. Aiming at the nonlinear problem, the method of curve fitting for the calibration is given. In consideration of the characteristic of curve fitting, in this paper, a preprocess method called Multivariate Adaptive Kalman Filter is proposed for the photoelectric noise elimination. Then, the B-Spline curve fitting model is built by dividing the knot vector nonuniformly, which makes the precision of the sensor further promoted. In practical experiments, the result shows that the proposed method can be able to calibrate the sensor accurately, the mean square error of the calibration is 2.12X10-5mm2 , the position accuracy is 0.7%, the mean measurement error is 0.012mm.

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Document Type期刊论文
Corresponding Author李兴强
Recommended Citation
GB/T 7714
崔昊,郭锐,李兴强,等. 基于非线性拟合的激光三角位移传感器标定方法[J]. 中国激光,2020,47(9):1-10.
APA 崔昊,郭锐,李兴强,&丛日刚.(2020).基于非线性拟合的激光三角位移传感器标定方法.中国激光,47(9),1-10.
MLA 崔昊,et al."基于非线性拟合的激光三角位移传感器标定方法".中国激光 47.9(2020):1-10.
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