This thesis is aimed to improve the performance and efficiency of three-dimensional laser scanning platform system by cheap components and high accuracy laser Doppler displacement meter (LDDM). A full-scale three-dimensional profile measurement system with an innovative optical setup for measuring the geometric shape of large wind-turbine blades in high accuracy is included in this thesis
With reverse Engineering analysis, we have improved the non-contact triangulation measurement method with Optical scale. Through making a better linear positioning accuracy to achieve, better 3D image pixel and system performance, with less 3D measurement costs, this system presents a better competitive strength in industry. This system is based on a self-made long stroke linear measurement platform including 3 meter movement mechanism, optical scale, 3D image capture camera, single-line laser, PID controller, brushless DC motor and transmission system. The characteristic of this measuring system contains: Completely optical and electrical motor drive and PID control integration interface, which expedite the scan measurements of 0.5 to 2 m composite wind turbine blades, with single line laser head and non-contact optical sensor to capture images, we use LabVIEW image optical probe to achieve the captured image thresholding, thinning and to regulate surface data. Finally, the shape of three-dimensional curved blades and determined. We then make the blades and calculate aerodynamic through the various parts of the software to get the wind turbine performance data.
