| 线激光传感器的边缘偏差修正方法 |
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| 引用本文： | 赵洪楠,江文松,杨力,罗哉,李泓洋.线激光传感器的边缘偏差修正方法[J].红外与激光工程,2022,51(4):20210317-1-20210317-7. |
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| 作者姓名： | 赵洪楠 江文松 杨力 罗哉 李泓洋 |
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| 作者单位： | 1.中国计量大学 计量测试工程学院，浙江 杭州 310018 |
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| 基金项目： | 国家自然科学基金（52075511，52005471，51927811，51675499）；中央高校基本科研业务费专项（PA2020GDSK0072）；浙江省自然科学基金（LQ20E050016） |
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| 摘 要： | 为了修正线激光传感器在轮廓测量中的边缘偏差，提出了一种边缘偏差修正方法。该方法通过分析边缘偏差的主要误差来源，建立一种基于曼哈顿距离和切比雪夫距离的混合去噪模型，实现杂散噪声的滤除；采用最小二乘法对线激光轮廓测量误差模型进行补偿。为了验证该方法的有效性，以量块的标称尺寸作为评价指标进行测量校准实验。实验结果表明:该修正方法对杂散噪声的滤除效果显著；其中，未经补偿的尺寸测量误差为0.43 mm，经修正方法补偿后的尺寸测量误差最小达0.04 mm，比前者降低了一个数量级。因此，该方法可有效修正边缘偏差，提高线激光传感器的轮廓测量精度。
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| 关 键 词： | 线激光 轮廓测量 误差补偿 点云 算法 |
| 收稿时间： | 2021-05-17 |
Correction method for edge deviation of line laser sensor |
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| Affiliation: | 1.College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China2.Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China |
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| Abstract: | In order to correct the edge deviation of the line laser sensor in profile measurement, an edge deviation correction method was proposed. This method established a hybrid denoising model based on Manhattan distance and Chebyshev distance by analyzing the main error sources of edge deviation, and have achieved the filtering of spurious noise. In addition, the error model of line laser profile measurement was compensated by the least square. In order to verify the effectiveness of this method, the nominal size of the gauge block was used as an evaluation index to carry out measurement and calibration experiments. The experimental results show that the correction method has a significant effect on filtering stray noise. Among them, the uncompensated size measurement error is 0.43 mm, and the size measurement error is compensated is as small as 0.04 mm after the correction method , which is an order of magnitude lower than the former. Therefore, this method can effectively correct the edge deviation and improve the profile measurement accuracy of the line laser sensor. |
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