传感技术学报Issue(10)：1395-1400,6.DOI:10.3969/j.issn.1004-1699.2013.10.015
基于GMRES的超声过程层析成像算法研究
A Study on GMRES Algorithm for Ultrasound Process Tomography
摘要
Abstract
The present challenge in the ultrasonic process tomography on gas-solid two-phase flow is hard to obtain the effective experimental signals and the accurate algorithm to reconstruct the object images. For this reason,on the theory of the ultrasonic attenuation, an iterative reconstruction algorithm for ultrasonic tomography based on generalized minimal residual algorithm ( GMRES ) was presented:firstly, the generalized minimal residual was implemented to acquire the initial concentration distribution information of objects,which,and then was improved on the resolution of the image by the average filtering method. To verify the feasibility of the algorithm for ultrasonic gas-solid two-phase flow tomography system,we compared it with the current mainstream reconstruction algorithm under the conditions of the less effective information by solving the underdetermined equations. It is showed that this method can present a high reconstruction precision in the cases of both the numerical simulation and dynamic-static experiments, and reasonably reflect the gas-solid two-phase flow cross section of solid-phase concentration distribution in the pipe.关键词
超声法/层析成像/GMRES迭代算法/传感器/气固两相流Key words
ultrasonic method/process tomography/GMRES iterative algorithm/sensor/gas-solid two-phase flow分类
通用工业技术引用本文复制引用
刘金全,苏明旭,田昌,蔡小舒..基于GMRES的超声过程层析成像算法研究[J].传感技术学报,2013,(10):1395-1400,6.基金项目
国家自然科学基金面上项目(51176128,51076106) （51176128,51076106）
上海市教委重点项目(12ZZ142) （12ZZ142）
