Process tomography system by electrostatic charge carried by particles

被引:31
作者
Machida, M [1 ]
Scarlett, B
机构
[1] Idemitsu Kosan Co Ltd, Cent Res Labs, Chiba 2990293, Japan
[2] Univ Florida, Engn Res Ctr Particle Sci & Technol, Gainesville, FL 32611 USA
关键词
back projection (BP); displacement current; electrodynamic sensor; least squares (LS); reconstruction; tomography;
D O I
10.1109/JSEN.2005.843892
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Two methods, the back-projection (BP) method and the least-squares (LS) method, were applied to the electrodynamic tomography system. Electrostatic charges were assumed to exist in the sensing zone, and their images were reconstructed using these methods. The reconstructed images were compared with the original ones. The BP method is accurate in detecting the position of the electrostatic charge and is capable of detecting the size of the object. The BP method could not distinguish two charges at separate points in the sensing zone. The LS method could differentiate two points of charge, but the reconstructed images were of poor quality due to the large pixel size. A reconstruction algorithm combining the two methods produced better results.
引用
收藏
页码:251 / 259
页数:9
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