查询词典 electric current

According to More Effect,when the Hore component is placed in a gradient field,at the same time the direction of the current is perpendicular to the direction of the voltage,then between the two parallel side face come out the Hore voltage. When Hore component is set in this kind of uni-gradient magnetic field and the electric current is unchanged,the voltage output of Hore component will be proportional to the position of the Hore component in the magnetic field.

根据霍尔效应可知，置于磁场中的霍尔元件若电流方向与磁场方向垂直，则在霍尔元件垂直于磁场和电流方向的两个侧面将产生电势，将霍尔元件置于强度随空间位置线性变化的磁场中，且控制电流恒定，输出就正比于霍尔元件处于磁场中的位置，因此可以用霍尔元件来测量磁场与霍尔元件间的相对位移量。

The linear transient eddy current electromagnetic field problem for determining solution is characterized by replacing the interface condition of the tangential component of the electric field intensity by the interface condition of the normal component of the magnetic flux density, and ignoring the displacement current in the constraint equations.

谢莉 北京航空航天大学自动化科学与电气工程学院，北京 100083雷银照北京航空航天大学自动化科学与电气工程学院，北京 100083线性瞬态涡流电磁场定解问题的主要特点是边界条件使用磁感应强度的法向分量边界条件代替了电场强度的切向分量边界条件，约束方程中忽略了位移电流。

The simultaneously measurements of surface electric field and Maxwell current density show that, underneath active thundercloud, surface Maxwell current density reflects the change of cloud charge sources, and is quasi-steady between lightning discharges.

利用实验观测和模式计算相结合的方法，对传导电流、位移电流和电晕电流的相对重要性作了估计。

In the modelling aspect, Boeuf and Garrigues have established the transient state unidimensional quasi-neutrality combination model, has calculated the electron current and ion electric current vibration [1] separately.

在建模方面，Boeuf 和Garrigues建立了瞬态的一维准中性混杂模型，分别计算了电子电流和离子电流的振荡[1]。

To reverse the direction of(an alternating electric current) each halfcycle to produce a unidirectional current.

由于每个离散通道是单向的，并且定时令牌方案避免各设备间同时交谈，因此不会出现以太网中的碰撞情况。

To reverse the direction of(an alternating electric current) each half-cycle to produce a unidirectional current.

变换电流方向颠倒每一半周方向，以产生单方向性电流王子接收教训。

The Westing House company, who believed Alternating Current was the only current that could be used, a thought directly against Edison's, threw their hat into the electric chair "experiment".

Westing House 公司认为交流电是最好的方法，而托马斯。

According to the analysis of reasons of transformer mal-operation in Pingdingshan Electric Power Bureac for years , and according to the present situation of transformer protection studies and applications at home and abroad. This paper points out the shortcomings of discrimination between internal faults and magnetizing inrush, the problems existing in differentiating the slight faults of turn-to-turn in transformer are also advanced. On the base of the electromagnetic characteristics of transformer, the relations between fluxional differential current and voltage of source side analyzed, all the operating states of transformer simulated by EMTP/ATP, the criterion of magnetizing inrush in transformer is got. Through the wavelet analysis of current waveform, using the intense reaction of wavelet transform to the little change of signal, the internal faults of transformer are distinguished by testing local extremum.

本文根据平顶山市电业局历年来变压器保护误动的原因分析，并根据国内外变压器保护使用和研究的现状，指出了现有变压器保护在区分变压器励磁涌流和内部故障方面以及在判断变压器匝间轻微故障方面存在的问题和不足；从变压器电磁特性出发，分析了电源侧电压和电流微分之间的关系，利用电磁暂态仿真程序对变压器各种运行状态进行了仿真，并以此建立了判断变压器是否含有励磁涌流的判据；通过对电流波形的小波分析，利用小波变换对信号微小变化极强的反映能力，通过检测电流的局部极值点来区分变压器运行状态，并作为上述判据的补充。

From this research it is concluded that the magnetooptic glass fiber is applicable for making the allfiber current sensor which is to be used for the measurement of electric current and magnetic field.

标 签 磁光玻璃光纤法拉第效应全光纤电流传感器费尔德常数 magneto-optic glass fiber Faraday effect all-fiber current sensor Verdet constant

After analyzing different power steering systems, the control strategies for assist muter in an electric power steering system are emphatically discussed based on traditional control theory, including the designs of current closed-loop PI controller and current set-point algorithm.

在分析现有的各种助力控制策略的基础上，着重讨论了基于传统控制理论设计的电机控制策略与系统性能的关系，其中包括电流闭环PI控制器的参数设计及电流给定算法设计。

It has to be computed by the host for the actual clock rate.

主控制器可以用来计算实际的时钟速率。

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