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In the light of the trapezoidal back electromotive force and square phase current of brushless DC motor,a novel strategy of matrix converter driving BLDCM is presented in this paper.

针对无刷直流电机反电势为梯形波、相电流为方波的特点，提出一种用于驱动无刷直流电机的矩阵变换器的控制策略。

The system design of the complete procedures of measure focal plan and a computer- step motor interface circuit and complete step motor control procedures.

该系统设计了完备的检焦程序，并设计了电脑和步进电机的接口电路，另外设计了完备的步进电机控制程序。

Use the finite element analysis method to analyze the flux density, cogging force and the force density.

介绍了3种不同结构形式的永磁同步直线电机，基于3个不同的有限元模型，对电机的气隙磁密、齿槽力和力密度进行了分析。

Aiming at reducing cogging force in tubular permanent magnet linear motors, an analytical method based on energy method and Fourier series expansion was adopted, the expression of cogging force was deduced which is related with structure parameters of the motor.

为削弱圆筒永磁直线电机的齿槽力，采用了一种基于能量法和傅里叶分解的解析分析方法，推导出了圆筒直线电机与结构参数有关的齿槽力表达式。

The project combine the NN model consult self adapt modern intelligent control theory and current digital technology and apply this theory to follow adjust the moment of electromotor, which correspond control the moment of many electromotor. Inc a mainframe (adopt speed and current both closed loop system), seven frae electromotor (adopt NN model consult self adapt adjuster).

将神经网络模型参考自适应现代智能控制理论与当前的数字技术相结合应用于电机的力矩跟随调节，协调控制多台电机的力矩，包括：一台主机(采用速度、电流双闭环系统)，七台从机(采用神经网络模型参考自适应调节器)。

The influence of laminated core and winding on the natural frequencies and modal shapes of the stator are investigated.

预测电机的振动和噪声需准确计算电机定子结构的固有频率及定子的响应特性。

The motor s physics process in the changing of magnetic store energy and mechanism and parameter calculation in the self inductance, mutual inductance, magnetic flux linkage and electromagnetism torque is discussed in such respect of multi return and electromagnetism torque theory.

从多电流互感回路理论出发，以电磁转矩这一机电耦合项为依据，讨论电机的磁场储能与机械能相互转换的物理过程、隐极电机的电流回路中自感和互感参数计算、磁链方程及电磁转矩计算

This paper systematically describes the simulation of steering wheel reaction torque under all operating conditions by utilizing a torque motor,its principle,condition analysis and steady - state error analysis of torque motor. It provided a new approach for si...

本文系统地阐述了利用力矩电机进行全工况仿真汽车转向盘反力矩的原理、力矩电机的工况分析及稳态误差分析等，为全工况仿真汽车转向盘反力矩提供了一种新方法。

Portescap's newest hybrid motor family member, the h3 runs quieter and with less resonance across the entire speed range, assisting to counter the disadvantages typical in step motor systems.

Portescap混合电机的最新家庭成员，h3在整个运转范围内都能保证防音和减少交叉共振，有利于解决步进电机系统的典型缺点。

In order to reduce the movement scope and acceleration of Lorentz motor, the tracking precision of linear motor must be improved.

为减小微动电机的运动范围和加速度，必须提高直线电机的轨迹跟踪精度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。