Vector Dissipativity-Based Distributed Fault Detection for Plantwide Chemical Processes*

摘要

In this paper, a distributed fault detection scheme is proposed for plantwide chemical processes. First, a two-port system model structure for plantwide chemical processes is introduced. A distributed approach to fault detection for plantwide systems is developed, which deals with the interactions among process units. These detectors are designed to be sensitive to faults but insensitive disturbances. Based on the vector dissipativity condition, the gains of estimators and residue generator are determined offline by solving linear matrix inequalities. Finally, an illustrative example is given to demonstrate the effectiveness of the proposed approach.