ステレオカメラを用いた柔構造物の三次元振動変形測定法

摘要

We have developed a new method of measuring three dimensional transformation of a vibrating object using a high-speed stereo camera technique. This method is applicable to the large displacement of flexible structures that cannot be measured by the conventional method. As a demonstration, we have also developed a prototype comprising two high-speed cameras with a coaxial reflective optical system to measure the coordinates of the marker on the image plane of the respective cameras in real time and a unit that produces three-dimensional spatial coordinates from the aforementioned two plane coordinates. As a result, the prototype was found to have practical measurement accuracy and throughput with a simple operation.