电机的

The drive circuit was reversible in this system. The linear motor was controlled by the change of drive current.

该系统采用双向可逆的驱动电路，用驱动电流变化来控制直线电机的运动。

The calculating method and law can be helpful in design and manufacture of the cylindrical linear induction motor.

计算结果对大功率圆筒型直线感应电机的参数计算与制造有一定的实用价值。

A DC motor driver with constant frequency PWM is developed based on PIC, and the running performance of the DC motor is improved greatly.

另外使用PIC器件完成了单芯片集成式运行电路的设计，实现了直流电机的正常驱动，简化了控制逻辑系统。

The feedback from the electric current signal is the important data control system.

来自电机的反馈电流信号是控制系统中的重要数据。

Based on the ideas above, this paper gives the elaborate electromagnetism design process of a 5KW Halbach motor.

在上述设计的基础上，本课题完成了5KW Halbach电机的电磁设计。

Phase difference between the terminal voltage of an alternator and its electromotive force.

交流电机的端电压和其电动势之间的相角差。

But the stepper motor'sefficiency is low;much of the input energy must be dissipated as heat.

但是步进电机的效率低；多数的输入能量都必须以热量耗散掉。

This machine has PLC control and HMI interface to achieve linkage control in working condition. It a lso dynamically displays working status for various fan and motor of belt .

采用 PLC 控制，人机界面操作，可以实现工作状况的联控，还可以动态显示各区风机、网带电机的工作状态等。

The truncation error introduced by Fast Fourier Transformation process is discussed, and the algorithm used to reduce such error is introduced.

采用电磁场数值方法计算电机的暂态过程，要比用等值电路的方法更为精确，在系统大扰动及过饱和情况下尤其如此。

Secondly,the driving force of the motor is analyzed in finite element analysis method.

其次，用有限元的分析方法对超导电机的电磁力进行了数值计算。

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。