PWM 电机控制实验针对微型直流。两路带死区的 PWM 信号直接从 DSP 上产生，电机

驱动采用的是 4 个 PIN 三极管，可控制正反转。DSP 的 PWM 口在复位和无控制态度下为

IO 口，且为高电平，这样可能引起4个NPN管同时导通。为了防止这种情况的发生，DSP

出来的PWM信号进行了反向，即复位时给NPN基极的时低电平。 -PWM DC motor control experiment for the micro. Two PWM signals with dead zone to generate directly from the DSP, motor drives uses a 4 PIN transistor can be controlled reversing. The PWM port DSP reset and no IO ports under the control of the attitude, and high, this may lead to four NPN tubes simultaneously. To prevent this from happening, DSP PWM signal out of the reverse, that is reset to the NPN base time low.