1 Introduction 1 1.1 Background 1 1.2 Motivation 2 1.3 Problem Addressed 3 1.4 Existing Research 4 1.5 Contribution 5 1.6 Thesis Outline 5 2 Main Idea of Attack Detector 7 2.1 UIO based Actuator Attack Detector 7 2.2 Partial UIO based Actuator Attack Detector 9 3 Zero Dynamics Attacks on UIO based Actuator Attack Detector 11 3.1 Transmission Zero of System and Attack Detector 11 3.2 Zero Dynamics Attacks for System And Attack Detector 12 3.3 Numerical Example of Relationship between Z{J,S}, Z{J,UIO}, Z{J,pUIO} 13 3.3.1 Tennessee-Eastman Process 13 3.3.2 Toy example 17 4 Simulation 21 4.1 Tennessee-Eastman Process 21 4.1.1 ZDA on Tennessee-Eastman process model 23 4.1.2 ZDA on UIO based a ctuator attack detector of Tennessee-Eastman process model 25 4.2 Quadruple-Tank Process 27 4.2.1 ZDA on Quadruple-Tank Process 28 4.2.2 ZDA on UIO based actuator attack detector of Quadruple-Tank process 29 5 Discussion and Conclusion 55
