Step motor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.

步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。

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In addition, the rotation feedback control is added to keep the practical rotation speed at setting value when FPC stands by.

此外，还附加了转速反馈控制，使FPC转速在其待机时总是能保持在稳态给定转速。

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Introduces a measurement method of instantaneous speed of rotation and dynamic process of speed of electric machine by means of single chip microcomputer and photoelectric transducer.

介绍了一种利用单片机和光电转速传感器来测量电机瞬态转速及电机转速变化过程的方法。

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One idea is that "star quakes" on the surfaces of pulsars affect the change in rotation speed, or that the glitch is caused by interactions between the stars' fluid interiors and crusts.

MSN: Oddball pulsating star hiccups as it spins