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Research in Calculation of Principal Curvature of Free-formSurface Based on Non-linear Automatic FitnessFunction of Genetic Algorithm(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2018年03期
Page:
19-
Research Field:
人工智能算法与应用专栏
Publishing date:

Info

Title:
Research in Calculation of Principal Curvature of Free-formSurface Based on Non-linear Automatic FitnessFunction of Genetic Algorithm
Author(s):
Zhao Shitian; Fu Yingying; Zeng Yong; Zheng Lei; Zhou Bo
School of Mechanical Engineering,UGS College,Yancheng Institute of Technology,Yancheng 224051,China
Keywords:
non-linear automatic fitness function; genetic algorithm; maximum principal curvature
PACS:
TP391
DOI:
10.3969/j.issn.1672-1292.2018.03.003
Abstract:
Improved genetic algorithm(IGA)is proposed aiming at the calculation of maximum principal curvature of freeform surface. A novel non-linear automatic fitness function is designed according to the features of the principal curvature,and new selection rules of the units to be selected are presented. The IGA is tested through the Schaffer function and applied to the maximum principal curvature calculation of free-form surface. Verification example shows that the maximum principal curvature of the freeform surface can be calculated accurately and stably by the IGA. The number of calculation of the points is less than one third of that of the free-form surface discrete method. The efficiency of computation is improved greatly.

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Last Update: 2018-09-30