By analyzing relation between BEMF of the hard disk spindle motor and the rotate speed. This paper presents a new method of following the motor rotate speed by PLL to lock BEMF.
通过对硬盘主轴马达的反电动势与马达转速之间关系的分析，提出一种利用马达的反电动势信号跟踪马达转动速度变化，产生系统伺服写入时钟信号的方法。
The driving motor can rotate in different speed automatically while the electric stove in corresponding position and the flow of the electric stove can k...
实现了驱动电机在电炉不同旋转位置能自动采用不同的旋转速度，从而使电炉输出的流量保持稳定。
A motor is used to rotate a disk in the test liquid at a know speed.
发电机是用作旋转园盘在知道的速度下。
Motor drives the solid-bowl without holes and the feeding scroll assembled concentric to rotate together to a higher speed at a certain differential speed.
电机带动无孔转鼓及同心安装的输料螺旋，以一定的差速同向高速旋转。
Using the technique of frequency conversion in three-phase motor, it is convenient to simulate vehicles engine in differ rotate speed.
利用变频技术对三相异步电动机进行变频调速，方便地模拟了车辆发动机不同转速。
Rotate frequency conversion regulating speed, drive servo motor or stepper motor, drive ball screw.
旋转变频调速，驱动伺服电机或步进电机，传动滚珠丝杆。猈。
In many industrial processes associated with motor control, a high resolution and shortcut and accuracy response rotate speed measurement system with large scope is needed.
在很多与电机控制相关的工业过程中，都需要有一个在较大速度范围内具有分辨率高、响应快捷准确的测速系统。
On the side of software, we have completed the main program, rotate speed detecting program, PID control program, motor drivers and servo-driven program.
在软件方面，完成了主程序、转速检测程序、舵机驱动程序以及电机驱动程序等的编写。
When running, the motor drives the spindle and the power wheel to rotate speed.
运转时，电机带动主轴及动力盘高速旋转。
Thesis this is it rely mainly on one-chip computer to explain emphatically, DC motor and the measure of rotate speed central systems.
本论文着重阐述了以单片机为主体，直流电机、转速测量为核心的系统。
Using high quality five stars sol motor with large torque capacity and steady rotate speed.
采用优质五星熔胶马达，扭拒大，转速平稳。
Working Principle: When the hard rock counter-attacking crusher works, the electric motor drives the rotor where installed hammers to rotate with high speed.
板锤固装在高速旋转的转子上，并沿着破碎腔按不同角度布置若干块反击板。
The communication between PC and the AT89C52 chip is achieved through the RS232 bus, so scanning mode, rotate speed, step and direction of step motor are setup expediently.
利用AT89C52单片机控制两台步进电机，通过RS232总线进行上位机（PC）与下位机（AT89C52）的通讯，可方便地进行步进电机扫描方式、转速、步长和方向的设置，实现了对步进电机的精确控制。
The communication between PC and the AT89C52 chip is achieved through the RS232 bus, so scanning mode, rotate speed, step and direction of step motor are setup expediently.
利用AT89C52单片机控制两台步进电机，通过RS232总线进行上位机（PC）与下位机（AT89C52）的通讯，可方便地进行步进电机扫描方式、转速、步长和方向的设置，实现了对步进电机的精确控制。
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