电流

The torque ripple in SRM are relatively higher compared to induction machines. In this paper, based on the experimental data of static torque characteristic, a fuzzy-neural network is applied to learning it's inverse model off line, then according to the predefined torque distribute function, optimal current profile is real-time gained by the FNN on line, which results in a linear, decoupled, low ripple control of torque. The performances of the proposed method is demonstrated by computer simulation results.

与传统交、直流电机相比，SRM的一个最突出的缺点是其驱动系统转矩脉动比较严重，为此，论文提出了一种基于模糊神经网络转矩逆模型的SRM转矩控制方案，并设计了SRM滑模电流控制器，理论分析和仿真结果表明，基于滑模电流控制器的SRM电动机转矩逆模型控制策略能够有效的解耦、补偿和抵消SRM非线性转矩脉动特性，有效的控制SRM相转矩按期望相转矩变化，从而实现了SRM高性能、低脉动转矩控制。

Using SPWM control with MCU designed subdivision drive mode of current vector even rotating with uniform amplitude, which can realize multi-kinds subdivision series control by setting software data. The current feedback was also adopted to compensate the error and the precise control to hybrid motor was implemented.

设计利用单片机的SPWM控制的电流矢量恒幅均匀旋转的细分驱动模式，并通过软件实现多种细分驱动控制，在此基础上为修正误差引入电流反馈环节，实现了对混合式步进电动机的精确运行控制。

The chip consists of a power mos, mode select circuit, driving circuit, and two series of controller circuit. The controller consists to the active current sensing circuit, sample and hold circuit, hysteresis current comparator, voltage to current converter, error amplifier and non-overlap circuit.

晶片包含一组功率电晶体、模式选择电路、驱动电路及二组控制电路，控制电路主要架构有主动式电流感测电路、取样保持电路、磁滞电流比较电路、电压对电流转换电路、误差放大器及非重叠电路。

A new algorithm based on artificial neural network is developed to eliminate and compensate the current transforming error caused by current transformer saturation.

提出一种基于人工神经网络的消除和补偿电流互感器饱和对传变一次电流影响的算法。

This paper presents a nonlinear real-time simulation model for current transformer considering saturation and hysteresis.

电流互感器电磁暂态过程仿真，在电力系统动态仿真系统中是必不可少的，为此提出了一个电流互感器的非线性实时仿真模型。

The effects of surface charge and bulk traps on current collapse, saturation current and knee voltage are investigated, and their relationships have been determined.

通过分析表面电荷与体陷阱对电流坍塌效应、饱和电流和膝点电压的影响，初步确定了其变化关系。

Also see Incremental Current and Saturation Current.

亦参阅增量电流及饱和电流

Features: High current, low saturation voltage, low on resistance, high hFE .

特征：大电流，饱和压降低，输入阻抗低，直流电流增益高。

ABSTRACT A three-component boundary element algorithm for the calculation of 3-d linear eddy currents is presented,which employs an imaginary magnetic charge scalar and an imaginary current density vector with two components,distributed over the interfaces of different regions,as unknowns.

提出一种计算三维线性涡流场的三分量边界元算法。该算法采用在导体表面上虚设的磁荷和电流密度为求解变量，仅需求解3个分量：虚设磁荷标量和电流密度矢量的2个分量。

The currents on the scatterer consist of three components, one is associated with the current induced by the incident field, the other two describe the reflected from the cylinder terminations.

圆柱上的电流由三部分构成，其中之一是入射波的感应电流，另外两部分是圆柱末端的反射电流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。