A General Concept of Measurements of Form Deviations of 3D Rotary Elements with the Use of the Adaptive Strategy

Measurements of form deviations of 3D elements can be conducted with various strategies. Such strategies differ in a number and distribution of sampling points located on an investigated surface. Low number of sampling points can bring about the situation that some surface irregularities cannot detected by a measuring system. An application of higher density of sampling points, in turn, results in significant lengthening of measurement time, which is undesirable. This is why authors propose to develop a novel, adaptive measurement strategy. Proposed adaptive strategy consists of two stages: a preliminary measurement and additional measurements. During the preliminary measurement an investigated area is scanned along a preselected trajectory. If measurement results show that there is a significant change of sensor readings in a certain fragment of an investigated surface, then we conduct additional measurements in the area where the large change of sensor readings occurred. The paper presents the state-of-the-art on contemporary measurement strategies of 3D elements and fundamentals of the adaptive strategy proposed by authors.