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Cover
CONTENTS
CHINESE ABSTRACT
ENGLISH ABSTRACT
ACKNOWLEDGEMENTS
CONTENTS
LIST OF TABLES
LIST OF FIGURES
LIST OF PHOTOGRAPHS
NOMENCLATURE
CHAPTER 1 INTRODUCTION
1.1 General Statements of Problem
1.2 Background Review
1.3 Proposed Approach
1.4 Organization
CHAPTER 2 FINITE ELEMENT FORMULATION OF THE ORTOR-BEARING SYSTEM
2.1 Equations of Motion for the Shafft Element
2.2 The Finite Element Model of the rotor-bearing System
CHAPTER 3 IDENTIFICATION FROM TIME-DEMAIN BASED ON THE FINITE ELEMENT MODEL
3.1 Derivation of Identification Formula for Case T-A ─Rotor Parameter Are All Known
3.2 Derivation of Indetification Formula for Case T-B ─Rotor Parameters in the Vicinity
of the Supports Are Known
3.3 Derivation of Indetification Formula for Case T-B ─Rotor Parameters
Are Unknown except for the Masses of the Elements in the Vicinity of the Supports
3.4 The Bias Problem
3.5 Relation of Noise to Signal Ration between measurements and Artificial Forces
3.6 Improvement of Identification Parocedure
3.7 Digital Simulation and Discussion
CHAPTER 4 IDENTIFICATION FROM FREQUENCY-DOMAIN BASED ON THE FINITE ELEMENT MODEL
4.1 Derivation of Identification Formula for Case F-A─Rotor Parameter Are All Known
4.2 Derivation of Identification Formula for Case F-B─Rotor Parameter in the Vicinity
of the Supports Are Known
4.3 Derivation of Identification Formula for Case F-C─Rotor Parameter Are Unknown
except for the Masses of the Elements in the Vicinity of the Supports
4.4 Digital Simulation and Discussion
CHAPTER 5 GENERAL TRANSFER MATRIX FORMULATION OF THE ROTOR-BEARING SYSTEM
5.1 Equations of Mode Functions for the Unbalance Shaft
5.2 Feneral Solutions of Mode Functions
5.3 The Transfer Matrix of the Shaft
5.4 Overall Transfer Matrix of hole System
CHAPTER 6 IDENTIFICATION BASED ON THE GENERAL TRANSFER MATRIX MODEL
6.1 Derivation of Identification Formula for Case G-A─Deflections and Deflection
Angle Are Measurable
6.2 Derivation of Identification Formula for Case G-B─Only Deflections Are Measurable
6.3 Digital Simulation and Discussion
CHAPTER 7 EXPERIMENTAL SETUP AND RESULTS
7.1 Test Rig
7.2 Experimental Instrumentation
7.3 Experimental Procedure and Results
CHAPTER 8 CONCLUSION
REFERENCES
APPENDIX A Local Matrices
APPENDIX B Contribution of Velocity Term in Equations(2.11)and (3.27)
APPENDIX C Detail of ai
APPENDIX D Detail of Modified ai
APPENDIX E Derivatio of the Matrices E,F,G,H,co,so,ωc,ωs,fac,fas in Sections 3.1
APPENDIX F Details of ,u,and v
APPENDIX G Elemens of Matrix H
APPENDIX H Elements of Matrix T口
APPENDIX I Elements of Matrix A
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