讲解了绝对式编码器和增量式编码器，重点介绍了绝对式编码器的接口等，具有很好的借鉴作用-Explained the absolute encoder and incremental encoder, focus on absolute type encoder interface and so on, has the very good reference

pid增量式它具有原理简单，易于实现，适用面广，控制参数相互独立，参数的选定比较简单等优点；-pidPID control of the smart car is the classic algorithm in process control, according to the percentage of deviation (P), Integral (I) and differential (D) control of PID controller (also known as PID r