独立模式算法求解颗粒粒径分布的研究  

Study of Independent Model Algorithm for Determination of Particle Size Distribution

作　　者：徐峰[1] 蔡小舒[1] 苏明旭[1] 赵志军[1] 李俊峰[1] 

机构地区：[1]上海理工大学颗粒与两相流测量技术研究所,上海200093

出　　处：《中国激光》2004年第2期223-228,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金 (编号 :5 0 176 0 33)资助项目

摘　　要：光散射法测粒技术中常常会碰到反问题 (inverseproblem) ,即对多分散的颗粒两相介质 ,通过测得的多个角度或不同波长下的光信号 ,求解第一类Fredholm积分方程。从理论和实验两方面出发 ,改进了Twomey算法在前向散射和消光法测粒技术中的应用 。Inverse problem is always encountered in particle sizing techniques based on the light or acoustic scattering. Here, through numerical simulation and experimental validation, the Twomey algorithm applied in the foregoing measuring methods was improved and the reasonable results of particle size distribution were got. As a result, the Philip-Twomey-NNLS algorithm combined with generalized cross validation (GCV) technique is proved effective to handle the inverse problem in particle sizing.

关 键 词：应用光学 光散射 颗粒测量 反演算法 独立模式 

分 类 号：TH744[机械工程—光学工程]