The experimental and simulative waveforms of magnet current and DC bus current inosculate well, which indicates the validity of the proposed mathematical model of chopper and its control method.
磁体电压、磁体电流及直流母线电流仿真与实验波形吻合较好，所应用的斩波器数学模型及其控制方法能实现对超导磁体快速稳定地充、放电和续流。
Similarly, moving a magnet creates an electric current in a neighbouring wire.
同样，移动磁体也可以使线圈中产生电流。
The bullet has a small magnet inside that lets it generate AC current as it spins and a microprocessor that measures those current oscillations to derive how far it's traveled.
子弹藏有一块小磁铁和一颗芯片，子弹旋转带动小磁铁产生直流电，芯片通过电流波动感知射程的远近。
The N42 neodymium magnets provide the optimal balance of durability and magnet strength (current output).
钕磁铁的N42提供了最佳平衡的耐用性和磁铁强度(电流输出)。
A current can also be induced by constantly moving a permanent magnet in and out of a coil of wire or by constantly moving a conductor near a stationary permanent magnet.
让永久磁铁在线圈中进出运动或让一个导体在固定的永久磁铁附近的区域移动，也会产生电流。
The continuous rotating magnet field is transformed into discrete step field in the torque vector control and the electromagnet torque is controlled by means of regulating the stator current.
在矩角控制过程中将连续的旋转磁场离散为步进磁场，通过控制电机定子电流实现对电磁转矩的控制。
As for the permanent magnet in the system, the (equivalent) current model is adopted.
对系统中的永磁体，采用了等效电流模型。
The power supply is an important part of the superconducting magnet system, it affords both steady current and reliable protection for the superconducting magnet system.
电流源及保护控制系统是超导磁体系统的重要组成部分，其主要任务是为超导磁体系统提供稳定电流并实现可靠的保护控制。
The trend of the index loss of the magnet with increasing current was studied.
研究了磁体的指数损耗随电流变化的趋势。
In this article the equations of the instantaneous current, which take account of the thermal effect during a sine-shaped pulse current flowing in the magnet, are presented for the first time.
本文第一次建立了在一个正弦型脉冲通过磁体期间考虑热效应时的瞬态电流方程。
The magnetic field of magnet is the same with the magnetic field of electric current, they all caused by the movement of electric charges.
磁铁的磁场跟电流的磁场一样，都是由电荷的运动产生的。
Compared with the analytical and experimental results, it is confirmed that the permanent magnet eddy-current brake is an effective braking method and FEM is suitable for analyzing it.
实验结果和理论分析表明永磁涡流制动是一种高效可靠的制动方法。通过与解析法和实验结果的比较，证明用有限元法分析永磁涡流制动的可行性和准确性。
The direct measure mode is that Hall part is set into the interspace of loop winding or magnet coil, then the magnetism voltage difference or the current is measured.
直测式是将霍尔器件置于具有线圈绕组或直穿母线的环型铁磁体气隙中，测出气隙里的磁压降，即为被测电流。
The current source is an important section of the superconducting magnet system. It affords both of the steady current and reliable protection for the superconducting magnet system.
电流源保护控制系统是超导磁体系统的重要组成部分，其主要作用是为超导磁体系统提供稳定电流并实现可靠的保护控制。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数，使输出的机械特性与负载特性相匹配。
This paper analyzes the principle of the rotating permanent magnet eddy current brake and designs its structural mechanism.
分析了旋转型永磁涡流制动机的工作原理，并进行了涡流制动机机构设计。
The paper presents a structure for spliced insulation magnet slot wedge, and analyses its influence on slot harmonic, magnet and eddy current.
提出了一种绝缘拼接式磁性槽楔的结构，分析了这种槽楔对电机的齿谐波、齿间漏磁、涡流的影响。
A sensorless control strategy for permanent magnet synchronous motors is presented based on the measurement and observation of stator current, voltage and flux vector.
根据测量和观测的定子电流、电压和磁链，提出了一种永磁同步电动机无传感器控制方案。
Because the dynamic character of PMA is affected by permanent magnet and exciting current, in this paper, new mathematic model and equation are established and the calculation result is analyzed.
在动态计算中本文根据永磁和激磁电流共同作用这一特点，建立了相应的数学模型，给出了动态微分方程组的求解方法，并对动态过程进行了分析。
Hysteretic current PWM control is often used in doubly salient permanent magnet motor drive.
双凸极永磁电机的功率控制器通常采用电流滞环斩波控制。
Put pulley and rotor of the centrifugal together and made full use of magnetic field, the centrifugal permanent-magnet direct-current generator reduces the cost.
离心式永磁直流发电机把皮带轮与离心式转子设计为一体，磁场得到了充分利用，降低了成本。
Another is to put a little coil of wire on top of a pigeon's head and use an electric current from a small battery to make an electro-magnet.
另一项实验是在鸽子的头顶端绕上一个小金属线圈并用一小块电池发出的电流制成的一个电磁体。
Compared with other motors, Permanent Magnet Synchronous motor (PMSM) has the advantages of low inertia, high torque-current ratio, low noise, no excitation loss.
永磁同步电机与其它电机相比具有低转动惯量、高转矩电流比、低噪声、无励磁损耗等一系列的优点。
Inaccurate statements of this theorem usually occur in some teaching materials, which bring some mistakes in solving the problem of electric current making magnet field.
有些教科书中对该定理叙述不准确，造成求解电流产生磁场的问题中出现某些错误。
If the bar magnet is simply held stationary near the coil, no current is indicated.
如果磁棒单纯静止在线圈附近，就检测不到电流。
The wiper motor is a permanent-magnet direct current (DC) one. It is equipped on the front windscreen glass with the mechanical parts of the worm gear.
它采用直流永磁电动机，安装在前档风玻璃上的雨刮器电动机一般与蜗轮蜗杆机械部分做成一体。
Magnetism of the bar magnet is produced by the surface molecule electric current.
磁块的磁性，是由磁块的表面分子电流产生的。
The eddy current losses in the toroidal field superconducting magnet of the HT-7U tokamak, produced by plasma current and the eddy currents on the vacuum vessel, are analyzed.
文章分析了由等离子体电流和真空室感应电流在HT-7U装置环向场超导磁体中产生的涡流损耗。
The eddy current losses in the toroidal field superconducting magnet of the HT-7U tokamak, produced by plasma current and the eddy currents on the vacuum vessel, are analyzed.
文章分析了由等离子体电流和真空室感应电流在HT-7U装置环向场超导磁体中产生的涡流损耗。
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