定性代数方程的简明表达方法-影响方程及其建模  

Concise Expression Methods of Qualitative Algebra Equation-affection Equation and Modeling

作　　者：吴重光[1] 张卫华[1] 夏迎春[1] 纳永良[1] 吴锋棒[2] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029 [2]中国石油化工股份有限公司安全工程研究院,青岛266071

出　　处：《系统仿真学报》2009年第19期5990-5993,5997,共5页Journal of System Simulation

摘　　要：提出了定性代数方程简明表达方法的实现及建模规则。以化工装置中的固定床式烷基转移反应器为例讨论了影响方程建模过程,建立了烷基转移反应器的影响方程,并将影响方程模型直接转化为较为直观的符号有向图(SDG)模型。采用SDG定性推理(即基于网络拓扑的定性仿真方法)识别故障的完备性较高、能够揭示故障演变的路径和历程,在复杂过程系统危险识别和故障诊断领域得到广泛应用。The modeling rules and concise expression methods for qualitative algebra equation were introduced. The modeling process of affection equation was discussed on the fixed bed transalkylation reactor and the affection equation of the transalkylation reactor was given. The affection equation model can be transformed to the signed directed graph （SDG） model directly. The SDG qualitative inference method （the qualitative simulation method based on net topology） can be used for hazard identification and fault dignosis. This kind of method has higher completeness for fault identification and can be used in search of the pathway of fault evolution. The SDG technique is widely used in hazard identification and fault diagnosis of complex process systems.

关 键 词：影响方程 定性仿真 定性代数 定性建模 SDG模型 HAZOP 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]