In the second chapter, the paper introduced the advantage of three tier structure model which is make up by BPS,MES and Process Control System. The paper also described the components of every tier.

• 第二章介绍了流程企业管控一体化由五层模型到三层模型的演化,介绍了由经营管理系统(BPS)、制造执行系统(MES)、过程控制系统(PCS)三层结构组成的流程企业管控一体化模型的特点和优点,最后详细的给出了每一层应用的具体内部组成。