多点称重法测量质心误差修正

doi:10.3969/j.issn.1000-1158.2022.08.13

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Abstract In order to improve the accuracy of center of gravity measurement by multi-point weighing method, a method of correcting coordinates of load cells by using the total least squares method was proposed. Firstly, the principle of measuring center of gravity by multi-point weighing method and the main factors which affect the center of gravity measurement result were analyzed. Secondly, the method by using a standard samples centroid as the conventional truth value of the center of gravity to correct the coordinates of load cells was proposed. Again, a standard sample was measured more than five times by making it lay on different places. In the above position, a laser tracker was used to measure centroid coordinates of the standard sample, and convert the results to the measurement coordinate system, then the coordinates of the load cells were calculated by the total least squares method. Finally, another standard sample was measured to verify the method proposed. The experimental results show that the center of gravity measurement error is within 0.1mm, which means that the proposed method to correct the coordinates of the load cells is effective.

Key words： metrology center of gravity measurement multi-point weighting method coordinate correction total least squares

Received: 16 November 2020 Published: 20 August 2022

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TB932

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	Articles by authors
	WANG Mei-bao
	ZHANG Xiao-lin
	CHEN Li
	YU Xiao
	ZHANG Qi-yuan

Cite this article:

WANG Mei-bao,ZHANG Xiao-lin,CHEN Li, et al. Correction of Center of Gravity Measurement Error of Multi-point Weighing Method[J]. Acta Metrologica Sinica, 2022, 43(8): 1058-1063.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.08.13 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I8/1058

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