The Adaptive Approach to Measurements of Deviations of Cylindrical Parts

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. The low number of sampling points can bring about the situation that some surface irregularities cannot be 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 the 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 the measurement results show that there is a significant change in sensor readings in a certain fragment of an investigated surface, then we conduct additional measurements in the area where the large change in 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 the authors.