Since FDK reconstruction algorithm with circular orbit scan mode based on cone beam can only be used when the cone angle is small,the field of view is too narrow to scan large objects,a new reconstruction algorithm of 3D-ICT based on cone beam-RT(rotation and transverse) scaning-mode is developed.

FDK three-dimensional computed tomography(3D-CT) reconstruction algorithm for the circular orbit cone-beam scan with the point-shaped X-ray source is more widely accepted when compared with other types.

3D industrial computed tomography(3D-ICT) with circular orbit cone-beam scan mode based on Feldkamp Davis and Kress(FDK) reconstruction algorithm is considered more favorable for use than other processes.

Control on electron beam scanning track in brazing;

In order to use electron beam in brazing of precise structures and thermo-sensitive materials,accommodating every kinds of curve brazing seams,a vacuum electron beam brazing temperature closed loop control system was developed using PID controller,electron beam scanning track editing and on-line adjusting technologies,real-time acquisition and handling of brazing temperature.

By means of the SEBB system,experiments of the structure of four capillary tubes to a plate were carried out with a four-leaf scanning track and PID control method of heating-up velocity.

Analysis of the imaging characteristics and scanning traces of the 45° rotating scanning mirror;

Analysis for refractive property of rotary dual-wedge prism system and 2-D scanning trace

Based on the vector theory of optical reflection,the imaging characteristics and scanning traces of the two-axis pointing mirror are studied.