As for the fuzzy controller, the rule is depicted with analytic form and changed through self-regulating correction factor on line, so that it ADAPTS the system dynamic process.

In this paper, a proper analytic methods is proposed for determining the projective formulas when their centers are improper points between two line pencils of projective correspondence.

The coordinate of a certain point, the distances between points and distances from point to line are directly calculated with the analytic geometry formula.