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。-Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a commonly used technique for controlling power to inertial electrical devices, made practical