scholarly journals Contextual processing of electrical capacitance tomography measurement data for temporal modeling of pneumatic conveying process

2018 ◽  
Author(s):  
Andrzej Romanowski
Keyword(s):  
Measurement Data ◽  
Electrical Capacitance Tomography ◽  
Pneumatic Conveying ◽  
Electrical Capacitance ◽  
Temporal Modeling ◽  
Contextual Processing ◽  
Capacitance Tomography

On the electrostatics of pneumatic conveying of granular materials using electrical capacitance tomography

2004 ◽  
Vol 59 (15) ◽  
pp. 3201-3213 ◽  
Author(s):  
Kewu Zhu ◽  
S Madhusudana Rao ◽  
Qiau He Huang ◽  
Chi-Hwa Wang ◽  
Shuji Matsusaka ◽  
...  
Keyword(s):  
Granular Materials ◽  
Electrical Capacitance Tomography ◽  
Pneumatic Conveying ◽  
Electrical Capacitance ◽  
Capacitance Tomography

scholarly journals Multiphase permittivity imaging using absolute value electrical capacitance tomography data and a level set algorithm

2016 ◽  
Vol 374 (2070) ◽  
pp. 20150332 ◽  
Author(s):  
E. Al Hosani ◽  
M. Soleimani
Keyword(s):  
Level Set ◽  
Measurement Data ◽  
Industrial Process ◽  
Experimental Results ◽  
Electrical Capacitance Tomography ◽  
Electrical Capacitance ◽  
Absolute Value ◽  
Reconstruction Methods ◽  
Process Tomography ◽  
Capacitance Tomography

Multiphase flow imaging is a very challenging and critical topic in industrial process tomography. In this article, simulation and experimental results of reconstructing the permittivity profile of multiphase material from data collected in electrical capacitance tomography (ECT) are presented. A multiphase narrowband level set algorithm is developed to reconstruct the interfaces between three- or four-phase permittivity values. The level set algorithm is capable of imaging multiphase permittivity by using one set of ECT measurement data, so-called absolute value ECT reconstruction, and this is tested with high-contrast and low-contrast multiphase data. Simulation and experimental results showed the superiority of this algorithm over classical pixel-based image reconstruction methods. The multiphase level set algorithm and absolute ECT reconstruction are presented for the first time, to the best of our knowledge, in this paper and critically evaluated. This article is part of the themed issue ‘Supersensing through industrial process tomography’.

Experimental Study on Transporting Concentration of Pulverized-Coal Using ECT

2013 ◽  
Vol 779-780 ◽  
pp. 1052-1055
Author(s):  
Jing Liu ◽  
Zheng Du ◽  
Shan Shan Chen ◽  
Meng Sun
Keyword(s):  
Void Fraction ◽  
Combustion Process ◽  
Experimental Studies ◽  
Pulverized Coal ◽  
Electrical Capacitance Tomography ◽  
Cyclone Separator ◽  
Pneumatic Conveying ◽  
Electrical Capacitance ◽  
Economic Operation ◽  
Capacitance Tomography

Accurate measurement of the concentration of pulverized-coal in various pipes as a guidance to proper control plays a key role in assuring safe and economic operation of a pulverized coal-fired boiler during the combustion process. Experimental studies are carried out on the measurement of a lean mass flow in a pneumatic conveying pipeline using electrical capacitance tomography (ECT). A cyclone separator is employed in this system where the sensors are placed in order to compensate the inhomogeneity of the sensor sensitivity. The distribution of void fraction in radial direction, the average void fraction and the wavy characteristics are analyzed. The feasibility and reliability of the method are verified by the experimental results.

Nondestructive Dynamic Process Monitoring Using Electrical Capacitance Tomography

2006 ◽  
Vol 321-323 ◽  
pp. 1671-1674 ◽  
Author(s):  
U.Z. Ijaz ◽  
J.H. Kim ◽  
M.C. Kim ◽  
Sin Kim ◽  
J.W. Park ◽  
...  
Keyword(s):  
Measurement Data ◽  
Synthetic Data ◽  
Reconstruction Algorithm ◽  
State Equation ◽  
Electrical Capacitance Tomography ◽  
Time Varying ◽  
Electrical Capacitance ◽  
Independent Measurement ◽  
Reconstruction Performance ◽  
Capacitance Tomography

In this paper, we propose a dynamic Electrical Capacitance Tomography (ECT) image reconstruction algorithm based on the extended Kalman filter (EKF) to estimate the rapidly time-varying changes in the permittivity within the time taken to acquire a full set of independent measurement data. The ECT inverse problem is formulated as a state estimation problem in which the system is modeled with the state equation and the observation equation. Computer simulation with synthetic data is provided and comparison is done with existing modified Newton Raphson (mNR) method to illustrate the reconstruction performance of the proposed algorithm.

Electrical Capacitance Tomography Measurements on the Pneumatic Conveying of Solids

2001 ◽  
Vol 40 (20) ◽  
pp. 4216-4226 ◽  
Author(s):  
S. Madhusudana Rao ◽  
Kewu Zhu ◽  
Chi-Hwa Wang ◽  
Sankaran Sundaresan
Keyword(s):  
Electrical Capacitance Tomography ◽  
Pneumatic Conveying ◽  
Electrical Capacitance ◽  
Capacitance Tomography
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