电机控制

电机控制(Motor control)

1、通过抗阻来控制(Control by resistance)

在电源和电机间串联加进电阻，通过电阻值增加来进行电流控制，控制电机转数。该控制可以通过使用可变抗阻，改变线型电机特性。
(A resistor is placed between the power supply and the DC motor for restricting current by an increase in resistance to control the motor's speed in series.)

2、制动动作（短路制动）(Motor braking (Short-cirbrakecuit method))

采用电机端子间强制短路停止的方法，可以缩短电机停止时间。该控制可以产生强力的制动作用。（R＝0时为最大制动）。
(A method to force the terminals of the DC motor brake by short circuit. This method can shorten the motor's brake time and provides powerful braking control.
(Maximum braking when R = 0))

3、通过晶体三极管来进行DC直流电机的双向驱动(Bidirectional driving of DC motors by transistors)

使用NPN、PNP 晶体三极管，通过H桥电路的开关来进行双向驱动电机
(Bidirectional motor driving is achieved by switching the H-type bridge circuit by use of NPN and PNP transistors)

4、PWM控制(PWM control(pulse width modulation method)

PWM控制的基本原理是将周期设定为固定，通过改变脉冲“ON”和“OFF”的比例来改变平均能源，控制速度
(The basic principle of control is to vary the average energy to control the speed by varying a ratio of "ON" and "OFF" of a pulse with the cycle keptconstant)