基于激光跟踪仪的拖曳水槽车速动态校准
|
摘要
针对拖曳水槽测速轮静态标定后动态使用可能导致系统偏差的问题,提出一种基于激光跟踪仪的拖曳水槽车速动态校准方法。首先对激光跟踪仪的测速偏差进行了校准和修正,然后利用其开展了拖曳水槽车速动态校准研究;比较了水槽测速轮系统动态校准和静态校准的差异,发现采用测速轮系统在低车速下示值偏低,建议不同车速下采用不同的编码器系数;分析了车速稳定性和测速轮动态性能对校准结果的影响,探讨了实际情况下校准不确定度的评估方法。
Towing tank usually measures its speed using a tachometer wheel,of which there is a systematic bias due to static calibration without considering dynamic characteristics. A dynamic calibration method of towing speed is introduced based on laser tracker. We firstly calibrate and correct the laser tracker on a long-rail speed facility,and then use it on the towing tank. Results show tachometer wheel with only static calibration has a lower indication,and the slower speed has the lower indication. It is better to use different encoder coefficients at different speeds. The uncertainty estimation method are also discussed,including the influence of towing speed stability and dynamic performance of the tachometer wheel.
Towing tank usually measures its speed using a tachometer wheel,of which there is a systematic bias due to static calibration without considering dynamic characteristics. A dynamic calibration method of towing speed is introduced based on laser tracker. We firstly calibrate and correct the laser tracker on a long-rail speed facility,and then use it on the towing tank. Results show tachometer wheel with only static calibration has a lower indication,and the slower speed has the lower indication. It is better to use different encoder coefficients at different speeds. The uncertainty estimation method are also discussed,including the influence of towing speed stability and dynamic performance of the tachometer wheel.
引文
[1]国家质量监督检验检疫总局. GB/T 11826-2002转子式流速仪[S].
[2]张锡永,姜松燕,薛庆兰,等.对转子式流速仪定期检测/校准重要性的认识与分析[J].水文,2006,26(4):78-80.Zhang X Y,Jiang S Y,Xue Q L,et al. The Importance of Making Regular Examination and Adjustment of Rotating-Element Current-Meters[J]. Journal of China Hydrology,2006,26(4):78-80.
[3]姚永熙.水文用声学多普勒剖面流速仪的计量检定[J].水利技术监督,2008,16(2):8-10.Yao Y X. Calibration of sonic profile current-meter[J].Technical Supervision in Water Resources,2008,16(2):8-10.
[4] ISO 3455:2007(E),Hydrometry-calibration of Currentmeters in Straight Open Tanks[S]. 2007.
[5]姜松燕,高伟,骆工.声学多普勒流速仪计量检定工作分析[J].水利信息化,2010,(4):54-56.Jiang S Y,Gao W,Luo G. Analysis on Calibration of Acoustic Doppler Current Meter[J]. Water Resources Informatization,2010,(4):54-56.
[6]姚永熙.国内外转子式流速仪检定方法分析[J].水文,2013,34(6):1-5.Yao Y X. Calibration Method Comparison of Rotating Element Current Meters in China and Other Countries[J]. Journal of China Hydrology,2013,34(6):1-5.
[7]李琛,张锡永,张均顺,等.潍坊流速仪检定水槽升级技术改造[J].海洋通报,1999,18(1):83-87.Li C,Zhang X Y, Zhang J S, et al. Technological Transformation for the Upgrading of the Calibration Tank of the Weifang Current Meter[J]. Marine Science Bulletin,1999,18(1):83-87.
[8]金仲佳,刘胜,吴宝山,等.拖曳水池船模阻力校准技术研究[J].中国造船,2015,56(3):162-171.Jin Z J, Liu S, Wu B S, et al. Research on Calibration Technology of Ship Model Resistance in Towing Tank[J]. Shipbuilding of China,2015,56(3):162-171.
[9]林嘉睿,邾继贵,张郜琳,等.激光跟踪仪测角误差的现场评价[J].仪器仪表学报,2012,33(2):463-468.Lin J R,Zhu J G,Zhang H L,et al. Field evaluation of laser tracker angle measurement error[J]. Chinese Journal of Scientific Instrument,2012,33(2):463-468.
[10]甘晓川,孙安斌,王继虎,等.激光跟踪仪横向跟踪速度校准方法[J].计量学报,2014,35(6A):39-44.Gan X C,Sun A B,Wang J H,et al. Calibration Method for Lateral Tracking Speed of Laser Tracker[J].Acta Metrologica Sinica,2014,35(z1):39-44.
[11]乔丹,薛梓,黄垚,等.等分多读数头位置偏差对测角误差的影响研究[J].计量学报,2017,38(6):676-680.Qiao Dan,Xue Zi,Huang Y,et al. Study on Influence of Position Deviation of Multi-reading Heads of Equal Average on Angular Measurement[J]. Acta Metrologica Sinica,2017,38(6):676-680.
[12]王为农,苏永昌,任国营.激光跟踪仪的动态特性研究[J].计量学报,2007,28(1):34-36.Wang W N,Su Y C,Ren G Y. A Study on Dynamic Character of Laser Tracker[J]. Acta Metrologica Sinica,2007,28(1):34-36.
[13]国家质量监督检验检疫总局. GB/T 21699-2008直线明槽中转子式流速仪检定-校准方法[S].2008.
[2]张锡永,姜松燕,薛庆兰,等.对转子式流速仪定期检测/校准重要性的认识与分析[J].水文,2006,26(4):78-80.Zhang X Y,Jiang S Y,Xue Q L,et al. The Importance of Making Regular Examination and Adjustment of Rotating-Element Current-Meters[J]. Journal of China Hydrology,2006,26(4):78-80.
[3]姚永熙.水文用声学多普勒剖面流速仪的计量检定[J].水利技术监督,2008,16(2):8-10.Yao Y X. Calibration of sonic profile current-meter[J].Technical Supervision in Water Resources,2008,16(2):8-10.
[4] ISO 3455:2007(E),Hydrometry-calibration of Currentmeters in Straight Open Tanks[S]. 2007.
[5]姜松燕,高伟,骆工.声学多普勒流速仪计量检定工作分析[J].水利信息化,2010,(4):54-56.Jiang S Y,Gao W,Luo G. Analysis on Calibration of Acoustic Doppler Current Meter[J]. Water Resources Informatization,2010,(4):54-56.
[6]姚永熙.国内外转子式流速仪检定方法分析[J].水文,2013,34(6):1-5.Yao Y X. Calibration Method Comparison of Rotating Element Current Meters in China and Other Countries[J]. Journal of China Hydrology,2013,34(6):1-5.
[7]李琛,张锡永,张均顺,等.潍坊流速仪检定水槽升级技术改造[J].海洋通报,1999,18(1):83-87.Li C,Zhang X Y, Zhang J S, et al. Technological Transformation for the Upgrading of the Calibration Tank of the Weifang Current Meter[J]. Marine Science Bulletin,1999,18(1):83-87.
[8]金仲佳,刘胜,吴宝山,等.拖曳水池船模阻力校准技术研究[J].中国造船,2015,56(3):162-171.Jin Z J, Liu S, Wu B S, et al. Research on Calibration Technology of Ship Model Resistance in Towing Tank[J]. Shipbuilding of China,2015,56(3):162-171.
[9]林嘉睿,邾继贵,张郜琳,等.激光跟踪仪测角误差的现场评价[J].仪器仪表学报,2012,33(2):463-468.Lin J R,Zhu J G,Zhang H L,et al. Field evaluation of laser tracker angle measurement error[J]. Chinese Journal of Scientific Instrument,2012,33(2):463-468.
[10]甘晓川,孙安斌,王继虎,等.激光跟踪仪横向跟踪速度校准方法[J].计量学报,2014,35(6A):39-44.Gan X C,Sun A B,Wang J H,et al. Calibration Method for Lateral Tracking Speed of Laser Tracker[J].Acta Metrologica Sinica,2014,35(z1):39-44.
[11]乔丹,薛梓,黄垚,等.等分多读数头位置偏差对测角误差的影响研究[J].计量学报,2017,38(6):676-680.Qiao Dan,Xue Zi,Huang Y,et al. Study on Influence of Position Deviation of Multi-reading Heads of Equal Average on Angular Measurement[J]. Acta Metrologica Sinica,2017,38(6):676-680.
[12]王为农,苏永昌,任国营.激光跟踪仪的动态特性研究[J].计量学报,2007,28(1):34-36.Wang W N,Su Y C,Ren G Y. A Study on Dynamic Character of Laser Tracker[J]. Acta Metrologica Sinica,2007,28(1):34-36.
[13]国家质量监督检验检疫总局. GB/T 21699-2008直线明槽中转子式流速仪检定-校准方法[S].2008.