Most of the real-world data samples used to train artificial neural networks (ANNs) consist of correlated information caused by overlapping input instances. Correlation in sampled data normally creates confusion over ANNs during the learning process and thus, degrades their generalization capability. This paper proposes the Principal Component Analysis (PCA) method for elimination of correlated...

Electrical capacitance tomography (ECT) technique is a new technique for two-phase flow measurement. ECT is a complex nonlinear problem. To solve the ill-posed image reconstruction problem, image reconstruction algorithm based on wavelet neural networks (WNN) was presented. The principal component analysis (PCA) method was used to reduce the dimension of the input vectors. The transfer function...

Vertical packed columns are widely used in absorption, stripping and distillation processes. Flooding will occur the vertical as a result of excessive liquid accumulation, which reduces mass transfer efficiency causes large pressure drop. Pressure drop measurements typically hydrodynamic parameter for predicting flooding. They are, however, only indicative occurrence transition flow regime acro...

A new electrical capacitance tomography (ECT) image reconstruction method, termed Sensitivity Factor Regularization (SFR), is developed. The SFR method provides an explicit formulation for solving the image reconstruction problem that performs better than other explicit methods, such as linear back-projection and Tikhonov regularization, while providing the same computational efficiency. The co...

To study the fundamental physics of complex multiphase flow systems using advanced measurement techniques, especially the electrical capacitance tomography (ECT) approach, this article carries out an initial literature review of the ECT method from a point of view of signal processing and algorithm design. After introducing the physical laws governing the ECT system, we will focus on various re...

Abstract A novel concept for the fusion of Ultrasound Reflection Tomography (URT) and Electrical Capacitance Tomography (ECT) for industrial process applications is presented. The method is intended to combine the strengths of both principles while reducing their respective disadvantages. ECT is sensitive to bulk rather than to phase boundaries and suffers from blurred images. URT is able to de...

This paper reports a new approach to quantitatively evaluate the performance of Electrical Tomography (ET) in measuring dynamic multiphase flows. A virtual flow imaging platform based on ET is constructed and demonstrated two typical gas–liquid flows, i.e., water–gas oil–gas flow. Two coupling simulation cases, field electric currents electrostatics simulation, are performed simulate sensing Im...

Purpose Crystallization is the process widely used for components separation and solids purification. The systems crystallization evaluation applied so far, involve numerous non-invasive tomographic measurement techniques which suffers from some reported problems. purpose of this paper to show abilities three-dimensional Electrical Capacitance Tomography (3D ECT) in context non-intrusive visual...