以地震波作为激励信号校准拾振器灵敏度
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摘要
针对各种测振仪器的校准问题,以地震波作为校准激励信号,对振动比较法校准进行了研究。分析了校准的影响因素,对地震波复现进行了较为详细的研究,在中国地震局工程力学研究所振动计量开放实验室的水平向低频标准振动台上,利用选取的几组地震波实际进行了地震波复现实验,计算了地震波复现的相关系数,结果表明相关系数在0.95以上,较好的实现了地震波复现。最后利用几组不同的地震波作为激励对拾振器灵敏度进行了校准,并和激光绝对法校准结果进行了对比,两种方法获得的灵敏度结果一致性较好。该方法对未来地震仪器的校准提供了一种可供选择的途径。
A calibration method taking seismic wave as excitation signals together with an analysis of influencing factors in calibration and an in-depth discussion of reproduction of seismic waves were presented.Using a lower frequency vibration calibration system in institute of engineering mechanics(IEM),a few seismic waves were reproduced and the correlation coefficients were calculated.It was shown that the correlation coefficients are larger than 0.95.In addition,the sensitivity of a vibration transducer was calibrated with the reproduced seismic waves and a sine wave as excitations,respectively,and the results agreed well each other.The method proposed here offered a choice for future seismic instrument calibration.
A calibration method taking seismic wave as excitation signals together with an analysis of influencing factors in calibration and an in-depth discussion of reproduction of seismic waves were presented.Using a lower frequency vibration calibration system in institute of engineering mechanics(IEM),a few seismic waves were reproduced and the correlation coefficients were calculated.It was shown that the correlation coefficients are larger than 0.95.In addition,the sensitivity of a vibration transducer was calibrated with the reproduced seismic waves and a sine wave as excitations,respectively,and the results agreed well each other.The method proposed here offered a choice for future seismic instrument calibration.
引文
[1]GB/T20485.1-2008振动与冲击传感器校准方法第1部分:基本概念[S].北京:中国标准出版社,2008.
[2]范锦彪,祖静,林祖森,等.高g值加速度传感器激光绝对法冲击校准技术研究[J].振动与冲击,2012,31(11):149-153.FAN Jin-biao,ZU Jing,LIN Zu-sen,et al.Shock calibrationfor a high-g accelerometer using a laser interferometer[J].Journal of Vibration and Shock,2012,31(11):149-153.
[3]GB/T20485.21-2007振动与冲击传感器校准方法第21部分:振动比较法校准[S].北京:中国标准出版社,2007.
[4]李山有,金星,陈先,等.地震动强度与地震烈度速报研究[J].地震工程与工程振动,2002,22(6):1-7.LI Shan-you,JIN Xing,Chen xian,MA Qiang.Rapidreporting of peak strong motion and seismic intensity[J].Earthquake Engineering and Engineering Vibration,2002,22(6):1-7.
[5]王雷,周琪,高峰,等.新型数字强震仪关键技术分析[J].地震工程与工程振动.2011,31(6):153-158.WANG Lei,ZHOU Qi,GAO Feng,Wei Jiwu.Newtechnology used in strong motion seismograph[J].Earthquake Engineering and Engineering Vibration,2011,31(6):153-158.
[6]杨巧玉,舒毓龙.宽频带超低频标准振动台的研究[J].世界地震工程,2009,25(3):140-144.Yang Qiao-yu,Shu Yu-long.Research and development onultra-low frequency standard vibration tables with broad bank[J].Worle Earthquake Engineering,2009,25(3):140-144.
[7]舒毓龙,孙耀东.高精度低频振动台及伺服隔振[J].地震工程与工程振动,1998,18(4):131-136.Shu Yu-long,Sun Yao-dong.Precise shaking table with lowfrequency and servo vibration isolation[J].EarthquakeEngineering and Engineering Vibration,1998,18(4):131-136.
[8]中国地震局震害防御司.汶川8.0级地震未校正加速度记录[M].北京:地震出版社,8-13.
[9]杜芳,曹文清.振动台实验中提高地震波模拟精度的补偿原理和方法[J].世界地震工程,2002,18(1):129-132.Du Fang,Cao Wen-qing.Compensation principle and methodfor improving the simulation precision of seismic wave inshaking table test[J].World Earthquake Engineering,2002,18(1):129-132.
[10]刘一江,周慧蒙,彭楚武,等.基于迭代控制的电液振动台控制系统[J].控制工程,2009,16(5):543-546.LIU Yi-jiang,ZHOU Hui-meng,Peng Chu-wu,et al.Shaking table servo hydraulic control system based on iterativelearning control[J].Control Engineering of China,2009,16(5):543-546.
[11]刘永昌,关淑贤,任贵兴,等.地震模拟振动台波形再现定量判别法[J].地震工程与工程振动,1998,18(1):109-112.LIU Yong-chang,GUAN Shu-xian,REN Gui-xing,et al.Aquantitative method for wave reappearance ofn earthquakesimulation shaking table[J].Earthquake Engineering andEngineering Vibration,1998,18(1):109-112.
[12]李鹏波,胡德文,张纪阳,等.系统辨识[M].北京:中国水电出版社,2010:27-30.
[2]范锦彪,祖静,林祖森,等.高g值加速度传感器激光绝对法冲击校准技术研究[J].振动与冲击,2012,31(11):149-153.FAN Jin-biao,ZU Jing,LIN Zu-sen,et al.Shock calibrationfor a high-g accelerometer using a laser interferometer[J].Journal of Vibration and Shock,2012,31(11):149-153.
[3]GB/T20485.21-2007振动与冲击传感器校准方法第21部分:振动比较法校准[S].北京:中国标准出版社,2007.
[4]李山有,金星,陈先,等.地震动强度与地震烈度速报研究[J].地震工程与工程振动,2002,22(6):1-7.LI Shan-you,JIN Xing,Chen xian,MA Qiang.Rapidreporting of peak strong motion and seismic intensity[J].Earthquake Engineering and Engineering Vibration,2002,22(6):1-7.
[5]王雷,周琪,高峰,等.新型数字强震仪关键技术分析[J].地震工程与工程振动.2011,31(6):153-158.WANG Lei,ZHOU Qi,GAO Feng,Wei Jiwu.Newtechnology used in strong motion seismograph[J].Earthquake Engineering and Engineering Vibration,2011,31(6):153-158.
[6]杨巧玉,舒毓龙.宽频带超低频标准振动台的研究[J].世界地震工程,2009,25(3):140-144.Yang Qiao-yu,Shu Yu-long.Research and development onultra-low frequency standard vibration tables with broad bank[J].Worle Earthquake Engineering,2009,25(3):140-144.
[7]舒毓龙,孙耀东.高精度低频振动台及伺服隔振[J].地震工程与工程振动,1998,18(4):131-136.Shu Yu-long,Sun Yao-dong.Precise shaking table with lowfrequency and servo vibration isolation[J].EarthquakeEngineering and Engineering Vibration,1998,18(4):131-136.
[8]中国地震局震害防御司.汶川8.0级地震未校正加速度记录[M].北京:地震出版社,8-13.
[9]杜芳,曹文清.振动台实验中提高地震波模拟精度的补偿原理和方法[J].世界地震工程,2002,18(1):129-132.Du Fang,Cao Wen-qing.Compensation principle and methodfor improving the simulation precision of seismic wave inshaking table test[J].World Earthquake Engineering,2002,18(1):129-132.
[10]刘一江,周慧蒙,彭楚武,等.基于迭代控制的电液振动台控制系统[J].控制工程,2009,16(5):543-546.LIU Yi-jiang,ZHOU Hui-meng,Peng Chu-wu,et al.Shaking table servo hydraulic control system based on iterativelearning control[J].Control Engineering of China,2009,16(5):543-546.
[11]刘永昌,关淑贤,任贵兴,等.地震模拟振动台波形再现定量判别法[J].地震工程与工程振动,1998,18(1):109-112.LIU Yong-chang,GUAN Shu-xian,REN Gui-xing,et al.Aquantitative method for wave reappearance ofn earthquakesimulation shaking table[J].Earthquake Engineering andEngineering Vibration,1998,18(1):109-112.
[12]李鹏波,胡德文,张纪阳,等.系统辨识[M].北京:中国水电出版社,2010:27-30.
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