Based on the theory of epipolar slope matching, this paper proposes a new method of rapid ambiguity\|avoiding feature matching which can be used to solve the problem of ambiguity in matching effectively considering the trait of the inspection system of multi\|view stereo vision.

A simple and feasible way to determine electrode slope is introduced ,which doesn' t need standard solution or overall ionic strength regulator and only needs two types of solutions that can interreact and produce precipitate or weak electrolyte to compound different concentration ratio.

Firstly,2D FEM analysis was used to compute PM servomotor,the field of skewed pole was solved by a subsection method,the wave of EMF and disturbances of torque were effectively improved.