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磁致误差
相关语句
  magnetic error
     MAGNETIC ERROR OF PRECISE COMPENSATOR LEVEL AND ITS TEST METHOD
     精密补偿器水准仪磁致误差及其测试方法
短句来源
     MAGNETIC ERROR FUNCTION MODEL OF SELF ADJUSTING LEVEL AND DATA ANALYSIS
     自动安平水准仪磁致误差函数模型与数据分析
短句来源
     On the basis of analyzing the cause of magnetic error of precise compensator level,it is recomended that a set of magnetic error testing equipment is developed and an integral test method is formed.
     分析了精密补偿器水准仪磁致误差的成因,介绍了研制的一套磁致误差检测设备以及完整的检测方法。
短句来源
     Based on the theory of horizontal pendulum, the theoretical function model of magnetic error of self adjusting level is deriveted, and observation equation in geomagnetic field is set up.
     利用物理摆原理导出了自动安平水准仪磁致误差的理论函数模型,建立了地磁场中的观测方程。
短句来源
  相似匹配句对
     d. errors.
     d误差
短句来源
     errors.
     d. 随机误差
短句来源
     Two Magnetostriction Apparatuses
     磁致伸缩仪
短句来源
     MAGNETIC ERROR OF PRECISE COMPENSATOR LEVEL AND ITS TEST METHOD
     精密补偿器水准仪磁致误差及其测试方法
短句来源
     MAGNETIC ERROR FUNCTION MODEL OF SELF ADJUSTING LEVEL AND DATA ANALYSIS
     自动安平水准仪磁致误差函数模型与数据分析
短句来源
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According to the Mach-Zender interferometer, a fiber optic magnetometer for detectiong DC magnetic fields includes a first optical fiber having a magnetostrictive jacket thereon which defines a sensing arm, and a second fiber defining a reference arm. A first AC magnetic field of frequency op and a second AC field of frequency eq and DC magnetic fields are imposed on the magnetostrictive jacket so as to cause optical path length chang. This induces a corresponding phase shift in light transmitted through the...

According to the Mach-Zender interferometer, a fiber optic magnetometer for detectiong DC magnetic fields includes a first optical fiber having a magnetostrictive jacket thereon which defines a sensing arm, and a second fiber defining a reference arm. A first AC magnetic field of frequency op and a second AC field of frequency eq and DC magnetic fields are imposed on the magnetostrictive jacket so as to cause optical path length chang. This induces a corresponding phase shift in light transmitted through the sensing arm fiber. The phase detection device and the lock in amplifier will produce a signal proportional to t he DC magnetic field.The minimum detectable field is 10$-07(Oe/m).

在根据Mach-Zehnder干涉仅原理制作的各种光纤测磁传感仪中,由于传感臂一般都由磁致伸缩材料与光纤粘合在一起而构成,所以磁性材料所特有的磁致现象将导致重复测量的结果出现不确定的模糊。为了消除这种磁致误差,本文所设计的系统采用磁场扫描技术,除了在传感臂上施加一个频率为ω0的载波场以提高其灵敏度之外,同时还施加了一个频率为ω0的慢速扫描场以使各次重复测量保持相对的动态平衡,这样当被测场与交变的们置场共同作用于传感头时,利用相位检测装置即可得出被测场的大小。本系统可探测的最小静态场为10E-7(Oe/m)。

On the basis of analyzing the cause of magnetic error of precise compensator level,it is recomended that a set of magnetic error testing equipment is developed and an integral test method is formed.Through the tests with a great deal of data and the result of mathmatic statistics,it is shown that the standard deviation of four observation sets is 0.008″.The magnetic errors of precise compensator levels are tested more than one hundred sets/times for releveling of national first class net,crustal deformation...

On the basis of analyzing the cause of magnetic error of precise compensator level,it is recomended that a set of magnetic error testing equipment is developed and an integral test method is formed.Through the tests with a great deal of data and the result of mathmatic statistics,it is shown that the standard deviation of four observation sets is 0.008″.The magnetic errors of precise compensator levels are tested more than one hundred sets/times for releveling of national first class net,crustal deformation survey and precise engineering survey and so on.

分析了精密补偿器水准仪磁致误差的成因,介绍了研制的一套磁致误差检测设备以及完整的检测方法。通过大量的检测数据与数理统计,表明4测回的标准差为0.008″。该设备已为全国一等水准网复测,地震形变测量和精密工程测量等检测磁致误差100多台次。

Based on the theory of horizontal pendulum, the theoretical function model of magnetic error of self adjusting level is deriveted, and observation equation in geomagnetic field is set up. Using measurement datum, the influence of geomagnetic field on level Ni002 is analyzed. The measurement errors and the accuracy of determining F value are discussed.

利用物理摆原理导出了自动安平水准仪磁致误差的理论函数模型,建立了地磁场中的观测方程。通过实测资料,分析了地磁场对Ni002水准仪的影响,并对观测误差和F值的测定精度进行了讨论。

 
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