DISPERSION ESTIMATION BY METROLOGICAL INSPECTION OF COORDINATE-MEASURING MACHINES

Т.М. Pyrog

Information reliability, obtained by information users, depends on measurement data accuracy. Accuracy characteristics of coordinate-measuring machines (CMMs) producers obtain with help of deferent tools, positions and directions in space and estimate, using variety of methods. It is involve making conclusion about practical errors or comparing CMMs with each other. That way nowadays one of the main tasks is development universal CMMs’ inspection tools and methods. In this article give analytical calculation a priori and a posteriori dispersions, like one of the main touch-stone of reliability and quantity of measuring information

Key words: coordinate-measuring machine, measuring error, a priori and a posteriori dispersions, reliability.