摘要

To solve the 'soft-field' nature and the ill-posed problem in electrical capacitance tomography technology, a DFP Correction image reconstruction algorithm for electrical capacitance tomography is presented. On analysis of the basic principles of the ECT system, deduced mathematical model of DFP Correction algorithm to solve the problem of electrical capacitance tomography, and analyzed the convergence of the algorithm by the monotony of the iterative error. The feasibility of using this algorithm for ECT problems is also discussed. It shows that it is easy to meet the convergence condition and error of image reconstruction is small. Experimental results and simulation data indicate that the algorithm can provide high quality images and favorable stabilization compared with LBP, Landweber, CG and Conjugate Gradient algorithms and this new algorithm presents a feasible and effective way to research on image reconstruction algorithm for electrical capacitance tomography System.