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1.发明公开公开(公告)号：US20240264124A1
公开(公告)日：2024-08-08
申请号：US18564974
申请日：2022-04-03
发明人： Genqiang JING , Yingchao LUO , Xiaobing LI , Hongbo GUO , Qihao YIN
CPC分类号： G01N29/30 , G01N29/2418 , G01N33/383
摘要： The disclosed are a deflection calibration apparatus and method for a laser type high-speed deflection tester. The apparatus comprises rigid supports, rotating discs, driving systems and a deflection calibration unit; the rotating discs are mounted on the rigid supports and driven by the driving systems to rotate, and upper surfaces of the rotating discs are processed into inclined planes having a slope in the circumferential direction; the deflection calibration unit is used for calibrating a laser type high-speed deflection tester according to measured and theoretical deflection values; laser emitted by a Laser-Doppler vibrometer is incident on the upper surfaces of the rotating discs to obtain the measured deflection value; the deflection calibration unit calculates the theoretical deflection value according to the inclination angle and the rotational angular velocity of each rotating disc and the distance between a laser incident point and the gyration center of each rotating disc.
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2.发明公开公开(公告)号：US20240264031A1
公开(公告)日：2024-08-08
申请号：US18564990
申请日：2022-04-02
发明人： Genqiang JING , Lu PENG , Bing ZHANG , Hongbo GUO
IPC分类号： G01M5/00
CPC分类号： G01M5/0041 , G01M5/0008
摘要： A passive excitation-based online calibration method for a bridge structural monitoring system, comprising: taking a dynamic load of a normal passing vehicle of a bridge as a passive excitation source to act on a bridge structure; an RS and an SMS to be calibrated continuously and synchronously acquiring strain data of the bridge structure, and forming measurement data sequences according to time sequencing; calculating an instantaneous measurement error, a period measurement error, and a basic error of the SMS according to the measurement data sequences respectively acquired by the RS and the SMS to be calibrated; and taking the instantaneous measurement error, and/or the period measurement error, and/or the basic error as a calibration basis to perform online calibration on the metrology performance of the SMS.
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