PWM技术主要应用在智能车舵机上，它通过变频调节电压幅值，来改变电压的有效值，从而转换成对车的控制。对智能车的控制起到决定性作用，通过对PWM技术的运用可更好的对车的控制。-PWM technology is mainly applied in intelligent car on the steering gear, it through frequency conversion adjusting voltage amplitude, to change the effective valu