关键词: 叶片, 配准定位, 公差约束, 迭代最近点匹配算法

Abstract: To solve the model registration problem in the inspection of aeroengine blades, a tolerance zone constrained registration algorithm is proposed for the purpose of reducing the number of measuring points out of range of the given tolerance zone. This method is based on the Iterative Closest Point Algorithm（ICP） and takes tolerance requirements into consideration. The constraint regions are defined and weighting value is assigned to measuring points according to the constraint regions. The objective function of the tolerance zone constrained registration algorithm is established and a method to solve the function is presented. The experiments demonstrate that this approach is feasible and effective.

Key words: blade, model registration, tolerance zone, Iterative Closest Point Algorithm（ICP）