一种基于快速搜索圆心的圆度新算法

doi:10.3969/j.issn.1000-1158.2022.06.04

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Abstract A new algorithm for circularity based on fast search for the center of a circle is proposed, according to the definition of roundness of ISO 1101-1983. Through the established mathematical model and algorithm flow, two concentric circles and the center of the circle are quickly searched and found. First, use the least squares method to fit the center of the circle. Then, the moving direction of the circle center is determined according to the farthest point and the closest point from the circle center. The next circle center is searched according to the set step value and the center movement direction. Finally, iterative calculations are performed several times until the roundness meets the requirements. The experimental results show that the roundness calculation error of the proposed algorithm is less than 1μm, and the calculation efficiency is increased by 10 times, compared with the area search method. It can meet the needs of engineering applications.

Key words： metrology roundness algorithm concentric circles searching center

Received: 26 January 2021 Published: 30 June 2022

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TB92

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	Articles by authors
	SHENG Dong-liang
	ZHAN Jian-liang
	ZHU Dan

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SHENG Dong-liang,ZHAN Jian-liang,ZHU Dan. A New Algorithm for Circularity Based on Fast Searching the Center[J]. Acta Metrologica Sinica, 2022, 43(6): 724-728.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.06.04 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I6/724

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