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6SL3352-1AH32-6AA0
当确定了这三个参数后,PWM信号就可以通过将调制信号与载波信号相乘来生成。 由于载波频率固定,而调制信号占空比可变,所以PWM信号的平均值可以通过改变占空比来控制。
PWM波如何生成?
1.使用计时器/计数器:在单片机或数字信号处理器(DSP)等数字电路中,可以使用计时器/计数器来生成PWM波形。 计时器/计数器通过计算指定的时间间隔来产生定时的脉冲信号,通过改变脉冲的占空比,即脉冲宽度与周期的比值,来生成PWM波形。
2.使用模拟电路:可以使用模拟电路来生成PWM波形。 例如,通过将输入信号与三角波信号进行比较,可以生成PWM波形。 比较器可以使用运算放大器或其他器件实现。
6SL3352-1AH32-6AA0
6SL3352-1AH32-6AA0
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