caa a22 4500 475798163 CHVBK 20180406123730.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s001700050173 doi (NATIONALLICENCE)springer-10.1007/s001700050173 A Study on an Evaluation Method for Form Deviations of 2D Contours from Coordinate Measurement [Elektronische Daten] [H. Qiu, Y.-B. Li, K. Cheng, Y. Li, J. Wang] A practical approach towards evaluating form deviations of 2D complex contour profiles from the coordinate measurement data of discrete points is proposed. In this approach, a 2D complex contour is represented approximately by the combination of straight line and circular arc segments under the condition of satisfying the prespecified interpolation accuracy. The form deviation of a measured point is calculated relative to the approximate contour and the form deviation of the whole contour is evaluated using either the minimum zone criterion (MZC) or the least squares criterion (LSC). It has been demonstrated that the difference between the deviation definitions, one relative to the original contour and the other to the approximate contour, is not larger than the prespecified accuracy value, i.e. the evaluation precision of the form deviation can be sufficiently guaranteed. The effectiveness and the efficiency of the approach are verified with a practical example of a planar cam contour. Moreover, a weighted LSC technique is proposed in order to obtain a rational evaluation result for the measured points with non-uniform length interval.: Springer-Verlag London Limited, 2000 Keywords:Computer-aided inspection nationallicence Coordinate measurement nationallicence Form deviation evaluation nationallicence Qiu H. Department of Mechanical Engineering, Kyushu Sangyo University, Fukuoka, Japan, JP aut Li Y.-B Intelligent Systems Laboratory, School of Engineering, University of Wales Cardiff, Cardiff, UK, GB aut Cheng K. Department of Engineering, Glasgow Caledonian University, Glasgow, UK, GB aut Li Y. Engineering Design Centre, Department of Engineering, University of Cambridge, Cambridge, UK, GB aut Wang J. Intelligent Systems Laboratory, School of Engineering, University of Wales Cardiff, Cardiff, UK, GB aut https://doi.org/10.1007/s001700050173 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001700050173 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Qiu H. Department of Mechanical Engineering, Kyushu Sangyo University, Fukuoka, Japan, JP aut NATIONALLICENCE 700 1- Li Y.-B Intelligent Systems Laboratory, School of Engineering, University of Wales Cardiff, Cardiff, UK, GB aut NATIONALLICENCE 700 1- Cheng K. Department of Engineering, Glasgow Caledonian University, Glasgow, UK, GB aut NATIONALLICENCE 700 1- Li Y. Engineering Design Centre, Department of Engineering, University of Cambridge, Cambridge, UK, GB aut NATIONALLICENCE 700 1- Wang J. Intelligent Systems Laboratory, School of Engineering, University of Wales Cardiff, Cardiff, UK, GB aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer