Least square fitting algorithm based roundness evaluation of geometric tolerances = Đánh giá dung sai độ tròn dựa vào thuật toán bình phương bé nhất

Abstract

In the research of the theory and application of new-generation geometrical product specifications standard, least-square-fitting-algorithm method is applied to evaluate mechanical part roundness tolerance based on the measurement data. The evaluation results by last-square-fitting-algorithm method shows better application in computer measurement and evaluation by comparing with the traditional method of roundness tolerance assessment, it is also possible to expect to be used for application of shape tolerances, position tolerances such as straightness, flatness, parallelism and position degree etc...