根据系统设计的要求来选择符合要求的器件类型以及控制模式，本章主要讨论核心控制单元，电机驱动单元，循迹单元，避障单元，测距单元和遥控单元方案的比较与选择。-According to the requirement of the system design to select the conform to the requirements of the device type and control mode, this chapter focuses on the core control unit, the motor drive unit, tracking units, unit of obstacle avoidance, ranging unit and remote unit scheme comparison and selection.