Abstract:

In this paper,the roundness error estimation algorithm is study,and a LabVIEW-based iterative optimization method is designed for minimum area circle and maximum inscribed circle,The algorithm uses the least squares circle center as the initial center of the circle and combines Center Best Mobile cross-string method and the triangle law in order to get the best ideal center of the circle.Implemented with LabVIEW,this algorithm improves test accuracy and speed.

Key words: roundness error;LabVIEW;minimum area circle;maximum inscribed circle method