电机的

It used the finite element method to analyze the magnetic distribution within the effective width of primary lamination and the circuit method to simulate the end of primary winding.

阐述了深槽式单相直线感应电机的结构特点和运行原理，提出了场路结合的分析模型(其中用有限元方法分析铁心叠厚范围内的磁场分布，用电路来等效初级绕组端部)。

Rotating platform is a normal stage machine. In view of its speed regulation system, a scheme of digital AC speed regulation system base on permanent magnet synchronous motor is presented.

旋转台是一种常用的舞台机械设备，本文针对转台调速系统，提出了基于永磁同步电机的数字化转台交流调速系统的实现方案。

In this system,self-aligning torque is calculated by computer and sent to microcomputer,direct current motor's output is controlled by microcomputer through PWM technology,and we simulate self-aligning torque.

该系统中上位机实时计算出汽车受到的回正力矩，通过串口发送至单片机，单片机通过PWM控制直流电机的输出力矩以达到模拟的目的。

The power source of 60 Hz composed of the universal frequency converter and special sinusoidal electric wave filter and reactor may be used in submersible pump test within a certain range.

用普通变频器和专用正弦波滤波器、电抗器组成的60 Hz电源，在一定的范围内，可作为潜油电机的试验电源使用。

Structural design is a scientific of the numerical control sputnik important performance indicators, including the selection of the magnetic stepping motor and internal structure design.

科学的结构设计是数控云台性能的重要指标，包括电机的选用及内部结构设计。

Starting with the characteristic curve for a squirrel-cage motor, the gradients of the speed- torque curves increase as the resistance in the rotor circuit increases.

以松鼠笼式电机的特性曲线开始，速度坡度的力矩曲线随着电阻在转子电路中的增加而增加。

In the control system, the rotor position of stepper motor is usually obtained by position sensor.

在控制系统中，步进电机的转子位置信息的获取通常是通过位置传感器来实现的。

In the process of achieving the above functions, 30-120 seconds for the flag rising is adjustable, by changing the rotational speed of the step motor, the flag raising speed can be changed, and the time %26amp; tallness will be showed on the LED.

在实现以上功能的过程中，升降旗时间在30～120秒内可调，通过改变步进电机的转动速度来改变旗帜上升或下降的速度，并通过LED显示上升或下降时间和旗帜所在高度。

The balance regulation of the system us the digital PID control algorithm, using experiment to install PID parameter. Through the changed angle measured by angle sensor the stepper motor is controlled to make the teeterboard achieve balanceable state.

系统的平衡调节采用了数字PID控制算法，利用凑试法整定PID参数，通过角度传感器所测角度变化来控制步进电机的的转动实现跷跷板达到平衡状态。

The testing results from the self-testing grid indicated that the synchronization accuracy of scanning motor and the imaging quality of laser typesetter was both improved.

通过自检方格的测试证明，该系统提高了激光照排机行、场扫描电机的同步控制精度，从而提高了激光照排机的成像质量。

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。