Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Optics and Precision Engineering》 2010-11
Add to Favorite Get Latest Update

Calibration and experiment of vision measurement accuracy for motion of rocket nozzle

LIU Bo,YE Dong,CHEN Gang,CHE Ren-sheng (Department of Automatic Measurement and Control,Harbin Institute of Technology,Harbin150001,China)  
On the basis of the novel dual axes rotating and single axis translating calibration equipment,a calibration method for vision measurement of the motion of a rocket nozzle was proposed.Firstly,the motion metric from the calibration equipment and the measured values from vision system were mapped in the space, then the position and pose relations between the world coordinate system of stereo vision and the coordinate system of nozzle were deduced.After solving the pose matrix and translation vector,the vector angle coordinate system of the nozzle was established in vision measurement system.Subsequently,by sending a trigger signal and a synchronized time signal from the calibration equipment to cameras,the sampling time was synchronized,and the dynamic data were directly compared.Finally,the experiment for calibrating the vision measurement system was completed.The measurement errors of rotation center and vector angle in nozzle motion space±12°were analyzed.The experiment results indicate that the max error of vector angle is 0.093° and the max error of rotation center position is 0.832mm.
【Fund】: 国家自然科学基金资助项目(No.51075095)
【CateGory Index】: TP391.41
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved