本文介绍了集散系统的基本概念以及用于集散系统的两种基本的通信方式，设计了基于PowerPC 控制器的温度集散控制系统，并对该系统的硬件架构和软件功能进行了描述，最后给出了示例控制结果。关键字：PowerPC、集散系统、PID、现场总线、CANAbstract: The basic concept and the two basic communication modes of the DistributedControl System were introduced; A kind of temperature DCS based on the PowerPCcontroller was designed; Also the hardware structure of the system and the softwarefunction of the system were described; Finally, an example of control with it’sresult were given.Key words:PowerPC、Distributed Control System、PID、Field Bus、CAN