脉冲宽度调制PWM（Pulse-width modulation）是一种模拟信号电平数字编码方法。脉冲宽度调制PWM是通过将有效...
5.A novel inverter output filter consists of the variable inductance and capacitor is proposed for pulse-width modulated( PWM) drive system.提出了一种新颖的用于脉冲宽度调制(PWM)动系统的逆变器输出滤波器。 6.AM transmitter with pulse duration modulation脉宽调制式调幅发射机 7.PWMI (Pulse Width Modu...
Pulse Width Modulation (PWM) is a nifty current control technique that enables you to control the speed of motors, heat output of heaters, and much more in an energy-efficient (and usually quieter) manner. Existing applications for PWM include, but are not limited to: Variable speed fan cont...
2) PWM(Pulse-Width Modulation)wave PWM(脉宽调制)波形3) sine wave sinusoidal pulse width modulation(SPWM) 正弦波脉宽调制SPWM波形4) SPWM 正弦波脉宽调制 1. Triphase SPWM Signal Generator SM2001; 三相正弦波脉宽调制(SPWM)信号发生器SM2001 2. In order to realize the SPWM,the FPGA is used ...
Pulse-width modulation (PWM) provides the precision and the control range required by modern electronic devices. Using a simple circuit as an example, a modulating signal in the form of a sine wave applies to one terminal and a carrier signal applies to the other terminal. The output s...
PWM 的全称是脉冲宽度调制(Pulse Width Modulation),简称脉宽调制,通俗的讲就是调节脉冲的宽度。其原理是通过将有效的电信号分散成离散形式从而来降低电信号所传递的平均功率,根据面积等效法则,可以通过对改变脉冲的时间宽度,来等效地获得所需要合成的相应幅值和频率的波形。 PWM 有着非常广泛的应用,比如直流电机控制、...
Fig.1 Waveforms of voltage and magnetic induction intensity under sinusoidal and square wave excitation 正弦波激励下磁感应强度波形与t轴围成的面积为 (5) 方波激励下磁感应强度波形与t轴围成的面 积为 (6) 由式(5)和式(6)可得标准方波激励下的波形系数为 ...
From the series:Motor Control Melda Ulusoy, MathWorks This video discusses PWM—pulse-width modulation—and two different architectures to implement PWM control for controlling the speed of a BLDC motor. PWM is a square wave signal that repeats itself at a certain frequency. Each PWM cycle ...
4) pulse-width modulation(PWM) 脉宽调制(PWM)5) PWM PWM脉宽调制 1. In order to control the speed of the DC-Motor,PWM motor control was introduced. 为了实现对直流电机转速的控制,采用了PWM脉宽调制的电机控制思想,在PWM信号的产生上,设计了一种由8253(可编程定时/计数器)的工作方式2来产生脉宽...
The invention is suitable for the field of electric automobiles, and provides a PWM (Pulse-Width Modulation) wave detecting method and device. The PWM wave detecting method comprises the following steps of: when a PWM wave is detected, accumulating counts by using a counter; when the ...