计算物理 ›› 2008, Vol. 25 ›› Issue (3): 323-329.

• 研究论文 • 上一篇    下一篇

动态光散射测量粒径分布的格雷码编码遗传算法反演运算

李绍新   

  1. 广东医学院物理教研室, 广东 东莞 523808
  • 收稿日期:2006-12-31 修回日期:2007-07-26 出版日期:2008-05-25 发布日期:2008-05-25
  • 作者简介:李绍新(1972-),男,讲师,硕士,湖南常德,从事动态光散射技术与遗传算法应用研究.
  • 基金资助:
    东莞市科技计划(2007108101025)资助项目

Inversion of Particle Size Distribution from Dynamic Light Scattering Data with Gray-code Genetic Algorithm

LI Shaoxin   

  1. Guangdong Medical College, Physics Staff, Dongguan 523808, China
  • Received:2006-12-31 Revised:2007-07-26 Online:2008-05-25 Published:2008-05-25

摘要: 采用格雷码编码的遗传算法对动态光散射测量的粒径分布进行反演运算,数字测试结果表明,对于无噪声的分布,算法能精确的反演出各种粒子分布图像;对于加了一定噪声的分布,算法显示出较好的稳定性,能反演出主峰的分布图像.聚苯乙烯乳球的实验结果表明,该算法能反演双分布的粒径分布图像.与标准遗传算法和反演蒙特卡罗算法相比,该算法具有较高的搜索效率,能够用较少的计算时间快速搜索到最优解.格雷码编码遗传算法是一种更有效的随机反演算法.

关键词: 遗传算法, 格雷码, 动态光散射, 粒径反演

Abstract: A stochastic inverse technique based on Gray-code genetic algorithm (GGA) is proposed for inversion of particle size distribution from dynamic light scattering (DLS) data. It is shown that GGA inverts particle size precisely for different distribution with no random noise. GGA shows stability for distribution with random noise and gives distribution of main peaks. In numerical experiments of latex sphere, GGA inverts dynamic light scattering data with biomodal distribution successfully. Compared with standard genetic algorithm and inverse Monte Carlo method, GGA shows high efficiency in searching optimum results.

Key words: genetic algorithm, Gray-code, dynamic light scattering, particle size inversion

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