| 基于粒子群优化算法和非线性盲源信号分离测量两相流速度(英文) |
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| 引用本文： | 吴新杰,崔春阳,胡晟,李志宏,吴成东.基于粒子群优化算法和非线性盲源信号分离测量两相流速度(英文)[J].中国化学工程学报,2012,20(2):346-351. |
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| 作者姓名： | 吴新杰 崔春阳 胡晟 李志宏 吴成东 |
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| 作者单位： | 1. College of Physics, Liaoning University, Shenyang 110036, China;2. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China;3.School of Information Science and Engineering, Northeastern University, Shenyang 110006, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (50736002,61072005);the Youth Backbone Teacher Project of University,Ministry of Education,China;the Scientific Research Foundation of the Department of Science and Technology of Liaoning Province (20102082);the Changjiang Scholars and Innovative Team Development Plan (IRT0952) |
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| 摘 要： | In order to overcome the disturbance of noise,this paper presented a method to measure two-phase flow velocity using particle swarm optimization algorithm,nonlinear blind source separation and cross correlation method.Because of the nonlinear relationship between the output signals of capacitance sensors and fluid in pipeline,nonlinear blind source separation is applied.In nonlinear blind source separation,the odd polynomials of higher order are used to fit the nonlinear transformation function,and the mutual information of separation signals is used as the evaluation function.Then the parameters of polynomial and linear separation matrix can be estimated by mutual information of separation signals and particle swarm optimization algorithm,thus the source signals can be separated from the mixed signals.The two-phase flow signals with noise which are obtained from upstream and downstream sensors are respectively processed by nonlinear blind source separation method so that the noise can be effectively removed.Therefore,based on these noise-suppressed signals,the distinct curves of cross correlation function and the transit times are obtained,and then the velocities of two-phase flow can be accurately calculated.Finally,the simulation experimental results are given.The results have proved that this method can meet the measurement requirements of two-phase flow velocity.
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| 关 键 词： | particle swarm optimization nonlinear blind source separation velocity cross correlation method |
| 收稿时间： | 2011-12-14 |
The Velocity Measurement of Two-phase Flow Based on Particle Swarm Optimization Algorithm and Nonlinear Blind Source Separation |
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| WU Xinjie,CUI Chunyang,HU Sheng,LI Zhihong and WU Chengdong.The Velocity Measurement of Two-phase Flow Based on Particle Swarm Optimization Algorithm and Nonlinear Blind Source Separation[J].Chinese Journal of Chemical Engineering,2012,20(2):346-351. |
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| Authors: | WU Xinjie CUI Chunyang HU Sheng LI Zhihong and WU Chengdong |
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| Affiliation: | 1. College of Physics, Liaoning University, Shenyang 110036, China;2. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China;3.School of Information Science and Engineering, Northeastern University, Shenyang 110006, China |
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| Abstract: | In order to overcome the disturbance of noise,this paper presented a method to measure two-phase flow velocity using particle swarm optimization algorithm,nonlinear blind source separation and cross correlation method.Because of the nonlinear relationship between the output signals of capacitance sensors and fluid in pipeline,nonlinear blind source separation is applied.In nonlinear blind source separation,the odd polynomials of higher order are used to fit the nonlinear transformation function,and the mutual information of separation signals is used as the evaluation function.Then the parameters of polynomial and linear separation matrix can be estimated by mutual information of separation signals and particle swarm optimization algorithm,thus the source signals can be separated from the mixed signals.The two-phase flow signals with noise which are obtained from upstream and downstream sensors are respectively processed by nonlinear blind source separation method so that the noise can be effectively removed.Therefore,based on these noise-suppressed signals,the distinct curves of cross correlation function and the transit times are obtained,and then the velocities of two-phase flow can be accurately calculated.Finally,the simulation experimental results are given.The results have proved that this method can meet the measurement requirements of two-phase flow velocity. |
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| Keywords: | particle swarm optimization nonlinear blind source separation velocity cross correlation method |
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