过阻尼地震检波器阻尼系数测量的研究
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摘要
对动圈式恒速度型过阻尼地震检波器相对阻尼系数的测量方法进行了研究。首先引入了动圈式地震检波器的运动方程和输出方程,随同参数定义给出了这种检波器对直流电流的响应函数;然后讨论了当前两种过阻尼系数的测量方法———经典的参数辨识法及两点法,明确了它们的适用范围;最后提出了一种线性方法。根据该方法,相对过阻尼系数能够表示成检波器响应曲线的半峰高宽度和检波器自然频率乘积的线性函数。研究表明,利用本方法可在较宽阻尼范围取得更好性能,且该方法便于硬件实现。
It was devoted to the relative damping measurement for overdamped geophone with a moving coil of constant velocity. The movement function and output function of the geophone was introduced, from which the response function to a step direct current stimulating was deduced along with the definitions of parameters. Then two methods available for measuring the relative overdamping of a geophone were discussed. They are the classic parameter identification and the two-dot method. The application ranges for each of them were explained. At last, a linearization method was proposed. According to the method, the relative overdamping can be expressed in a linear function of the product of the width of half peak of the response curve by the nature frequency of the geophone. It is showed that better performance can be achieved in an even wider overdamping zone with the proposed method, and the method can be easily realized with hardware.
It was devoted to the relative damping measurement for overdamped geophone with a moving coil of constant velocity. The movement function and output function of the geophone was introduced, from which the response function to a step direct current stimulating was deduced along with the definitions of parameters. Then two methods available for measuring the relative overdamping of a geophone were discussed. They are the classic parameter identification and the two-dot method. The application ranges for each of them were explained. At last, a linearization method was proposed. According to the method, the relative overdamping can be expressed in a linear function of the product of the width of half peak of the response curve by the nature frequency of the geophone. It is showed that better performance can be achieved in an even wider overdamping zone with the proposed method, and the method can be easily realized with hardware.
引文
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[2]石金成,付小宁,冯旭东.直流激励法测量地震检波器的原理与溯源[J].石油工业技术监督,1999,15(3):10～11(SHIJincheng,FUXiaoning,FENGXudong.TheprincipalandremountabilityforgeophonetestingwithDCstimulating.J.PetroleumIndustryTechniquesSurveillance,1999,15(3):10～11(inChinese))
[3]付小宁,王力.动圈式过阻尼地震检波器测量的研究[J].现代计量测试,1999:(3):43～45(FUXiao ning,WANGLi.Studyonthemeasurementforaoverdampedmovingcoilgeophone.J.ModrernMetrologyandmeasurement,1999,(3):43～45(inChinese))
[4]付志方主编.振动模态分析与参数识别[M].北京:机械工业出版社,1990.178～206(FUZhifang(chiefeditor).Themodeanalysisandparametersidentificationinavabriationsystem.ThemechanicalindustryPress,1990:178～206(inChinese))
[5]付小宁,石金成,严正国.最小二乘法估计地震检波器的参数[J].传感器技术,1999,18(2):51～52(FUXiaoning,SHIJincheng,YANZhengguo.EstimationgeophoneparameterswithLSM.J.InductorTechnology,1999,18(2):51～52(inChinese))
[6]赵永红,谢石林,胡时岳.涡流检波器动特性研究[J].西安交通大学学报,2003,37(3):260～263(ZHAOYong hong,XIEShilin,HUShiyue.Researchondynamiccharacteristicofeddyaccelerationgeophone.J.Xi′anJiaotongUni versity,2003.37(3):260～263(inChinese))
[7]付小宁,党瑞荣,许世军.涡流地震检波器的参数及测量[J].石油仪器,2000,14(4):53～56(FUXiaoning,DANGRuirong,XUShijun.Parametersandmesurementofeddygeophone.J.PetroluemInstrument,2000,14(4):53～56(inChinese))
[8]SY/T5046地震检波器[S].中华人民共和国石油天然气行业标准,2002.9(SY/T5046Geophones,Petroleumindus trystandardofthePeoplesRebulicofChina,2002.9(inChinese))
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