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。
Based on this method, the accurate control pulses are generated from the PC timer and used for driving the step motor to realize a wide range speed control smoothly.
基于该方案，通过截用PC机系统的定时器资源产生精确定时的控制脉冲，使步进电机实现宽广范围内的速度平滑控制。
This step is the main, first to control the temperature, time and liquid zinc plating steel plate is removed from the liquid zinc in speed.
这一步最为主要，首先要操控好锌液温度、浸镀时刻及钢板从锌液中移出的速度。
This system employed infrared sensors to detect liquid drops and used step motor with other parts to control the liquid speed.
系统采用红外传感器检测液滴速度，用步进电机及其配套装置来控制液滴速度。
The paper introduces the principle of ZK400 Vacuum RT Machines; from control pulse frequency of step-motor to adjust mixes speed of Vacuum RT Machines.
本文介绍了ZK - 400真空注型机的原理及功能，并重点介绍了通过控制步进电机的脉冲频率达到调节真空注型机搅拌速度的目的。
The control of A-A on-off frequency conversion step speed regulator by adopting model 8031 single chip computer is described.
本文介绍了8031单片微机对交-交选通有级变频调速器的控制。
When one of the intermediate speed switches is selected, ISC adjusting switch can be used to control the engine speed. The engine speed increases or decreases by certain step length.
柴油机的转速在某一个中速开关转速基础上用ISC调整开关控制，柴油机的转速可按一定步长递增或递减。
The electric control unit USES variable frequency step-less speed regulation for easy operation, operation panel is simple and clear.
本机的电气控制采用变频无级调速，操作方便、直观，操作面板简洁、明了。
In order to control the material still in the middle position of the metering tube, the method also comprises a step of micro-adjusting the speed of the lifting belt.
为使物料始终控制在计量管的中位，该方法还包括微调提升带速度的步骤。
The electric control uses variable frequency step-less speed regulation for easy operation. Operation panel is simple and clear.
本机的电气控制采用变频无级调速，操作方便、直观，操作面板简洁、明了。
Then the paper analysed the algorithm of automatic assessment subsystem, focusing on the control of variable speed limits based on the variable-step algorithm and implementations.
然后分析了自动考核系统的自动控制算法，重点阐述了基于限速控制的自动运行算法和实现方案。
The speed control uses easily to control step-by-steps the electrical machinery in addition light error rotor;
速度控制采用易控的步进电机外加微小误差转子；
The speed-interval control of high-speed trains adopts the one-step braking curve mode, and multi-step braking curve is as a standby mode.
列车的速度-间隔控制采用一次制动模式曲线方式并以速度分级模式曲线方式作为备用模式。
Normal bone drill: variable speed control without step, reliable, economical price.
普通骨钻：无级变速，性能可靠，经济实惠。
A method which control the step motor with 8051 microcontroller is introduced, some methods in speed-up and speed-down curve design are compared.
介绍了8051系列单片机对步进电机的控制方法，并且提出和对比了几种步进电机升降速曲线的设计方案。
The precision of feeding sending size controlling is improved, because of the step motor speed regulating and closed-loop control method are adopted.
系统采用步进电动机进行调速，并形成闭环系统，提高了送料尺寸的精度。
Oscillating saw: powerful, portable, variable speed control without step, precise and stable, adopts the theory of Stryker cutter adapter, can be equipped blades the thickness of 0.8~1.2.
摆锯：动力强大，轻便小巧，无极变速，采用史塞克刀架原理设计，可接驳0.8~1.2厚度的锯片。
Two-step drive device make the force-enduring reasonable, and the frequency converter control the motor, it is easier to adjust the speed of spindle.
二级传动结构，使受力更合理，变频控制电机，可以方便调整所需转速。
Oscillating saw: Powerful, portable, variable speed control without step, precise and stable.
摆动据：动力强大，轻便小巧，无级变速，准确稳定。
The controller can control many step-motor systems in the meantime, and made motor run in multi-curve including speed-up, speed-down, orientation and direction's change.
该控制器可同时控制多台步进电机按曲线方式运行，包括加减速、定位及换向功能等。
The controller can control many step-motor systems in the meantime, and made motor run in multi-curve including speed-up, speed-down, orientation and direction's change.
该控制器可同时控制多台步进电机按曲线方式运行，包括加减速、定位及换向功能等。
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