Study Of Power Plant Pulverized Coal Pipeline Two-phase Process Tomography

First of all, this paper introduces the process tomography technology classification and development. By taking 8-elctrode electrical capacitance tomography systems as the research object,the paper discusses the composition of electrical capacitance tomography system and basic mathematic theory. Secondly, the paper presents the projected Landwe- -ber iteration method with preconditioning, according to the problems that Landweber algorithm has slow convergence rate. The simulation experiments shows that the algorithm has few iteration times, imaging with high accuracy and good real-time performance. In addition, aiming at Tikhonov regularization method image reconstruct- -tion of the problem that loss detail information,this paper proposed improved Tikhonov regularization algorithm.The algorithm has simple,quick and good real-time performance through the simulation experiment.Finally, this paper uses image fusion method to fuse pre-projection Landweber iterative algorithm and improved Tikhonov regularization algorithm,then obtains the fusion image which has high accuracy.