1、 摘要摘要 联合站油水分离过程是将高含水原油处理成合格产品的重要过程。从控 制理论的角度看，此过程具有多变量、干扰因素复杂、非线性、大滞后、压 力和界面强耦合的特点。在本文中，利用 DeviceNet 现场总线技术对联合站 油水分离问题加以解决，建立了联合站油水分离过程的动态模型，并对模型 进行了简化处理，研究了输入量与输出量之间的关系以及对干扰的响应，并 将其应用于 DeviceNet 现场总线构建的系统中。通过前期构建 DeviceNet 现 场总线网络，熟悉 DeviceNet 设备连接配置、网络组态，后期使用 RSLogix 500 编程，RSView 制作监控界面，使联合站对象能够满
2、足基本 PID 控制要 求，而且能够在人机界面上反映出联合站对象的运作情况。通过数学模型的 建立和基于 DeviceNet 现场总线的系统的构建，从一定意义上解决了联合站 油水分离过程中的多变量控制问题。 关键词关键词 联合站 油水分离 DeviceNet 现场总线技术 多变量控制 Abstract The oil-water separation process in oil station is an important process to change highly moisture content crude into qualified products. Viewed from
3、the angle of control theory, this process has many characteristics like variables, factors that interfere with complex, nonlinear, time delay, and the strong coupling of pressure and interface. In this paper, oil-water separation in oil station is solved by the using of DeviceNet fieldbus technology
4、, the dynamic model of the oil-water separation in oil station is established and simplified, the relationship between the input and output as well as the response to the disturbance are discussed, and all above are adopted in the system constructed by the DeviceNet fieldbus technology. Through the
5、early constructing of the DeviceNet fieldbus network DeviceNet equipment configuration and network configuration are well known, then RSLogix 500 are used to edit the programme , and RSView is used to construct the control interface, so that the target of the oil station can meet the basic need of P
6、ID control, and the operating conditions of the target of the oil station can be reflected on the man-machine interface.The multi-variable control in the oil-water separation process is to some degree solved through the establishment of the mathematical model and the based on the DeviceNet Fieldbus. Keywords oil station oil-water separation DeviceNet fieldbus technology onstruction of the system 目目 录录 摘要. I AbstractII 第 1 章 绪论 . 5 1.1 联合站油水分离控制系统国内外现状及发展趋势 . 5 1.1.1 联合站油水分离系统自动控制的意义 5 1.1.2
