Dissertation > Excellent graduate degree dissertation topics show

Research on Fault Diagnosis and Fault-Tolerant Control Technology for Suspension System of Low Speed Maglev Train

Author: XueSong
Tutor: LongZhiQiang
School: National University of Defense Science and Technology
Course: Control Science and Engineering
Keywords: Low-Speed Maglev Train Fault Diagnosis Tracking Differentiator Principal Component Analysis Active Fault-Tolerant Control Passive Fault-Tolerant Control Linear Matrix Inequation
CLC: TP273
Type: Master's thesis
Year: 2007
Downloads: 82
Quote: 4
Read: Download Dissertation

Abstract


Suspension system is one of the key parts of maglev train. Its security and reliability is directly responsible to the safety of maglev train. Therefore the research on fault diagnosis (FD) and fault tolerant control (FTC) methods for suspension system is of great significance.This paper does some groping study of FD and FTC for suspension system of low-speed maglev train. Many methods are adopted to design FD and FTC strategies, and then thorough analysis, compare and improvement are done to them. The effect of these FD and FTC strategies is proved by simulation.First, an active FTC strategy is designed for sensor faults of suspension system which is composed of two subsystem- FD subsystem and control law redistribution subsystem. Two strategies are adopted for the design of the FD subsystem. The first one is base on tracking differentiator (TD) and can only diagnose accelerometer fault. Simulation shows that the FD strategy based on "fast" (a kind of TD) is the most effective one. After that, the strategy is improved considering the fluctuation of the rail. The second one is based on principal component analysis combined with TD which is more adaptive to each kind of sensor faults of suspension system. Simulation shows that this strategy can reduce the time consuming and misinformation of FD system. The simulation also shows the time consuming of each FD strategy.Based on the FD subsystem, an active FTC strategy is designed based on control law redistribution for different sensor faults. Simulation shows that when sensor faults occur, new control law can drive the system stable again. The simulation also shows that the FD subsystem satisfies the requirement of active FTC.At last, a passive fault tolerant controller is designed based on linear matrix inequation (LMI) considering actuator invalidation. Simulation shows that when a single actuator is cut off, the passive fault tolerant controller can still make the system stable and maintain certain dynamic and static performance, thus serious accidents such as carriage falling are avoid.

Related Dissertations

  1. Design and Development of Application Programme for Fault Analyzer Based on Wince Platform,TP311.52
  2. Research on the 6-Dof Fault Tolerant Control of the Vibration Isolation Platform with Eight Actuators,TB535.1
  3. Fault Diagnosis Method Based on Support Vector Machine,TP18
  4. Fault Diagnosis Research on Three-Tank System,TP277
  5. Application of Improved Principal Component Analysis Algorithm in Course Construction,G642.4
  6. Research on the Key Technology of Waterborne Transport Security System,U698
  7. Research of Diagnosing Cucumber Diseases Based on Hyperspectral Imaging,S436.421
  8. The Impact of Tourism on Typical Vegetation in Luya Mountain Nature Reserve, Shanxi Province,S759.9
  9. Macaca mulatta palm morphological study of pattern ridge count,Q954
  10. Zhaoguan Lower Coal Group water inrush prediction and control techniques,TD745
  11. Research on Cultural Industrial Competitiveness of Chong Qing,F224
  12. The Research of Prairie Road Light Environment Effects on Physiological Indicators of Drivers,U491.254
  13. Design and Implementation of the Process Monitoring and Fault Diagnosis for Injection Molding,TQ320.5
  14. Research on Feature Extraction, Selection and Classification Algorithms for Pulmonary CAD,TP391.41
  15. Research Onamethod for Human Face Recognition Based on MMTD,TP391.41
  16. Multi-channel Real-time Online Monitoring System for Polymerizers,TP274
  17. The Research and Application of the State Evaluation Method of Power Generation Equipment,TM621.3
  18. Nonlinear System Fault Diagnosis and Reconstruction Based on Sliding Mode Observers,TP13
  19. Competitiveness’ Evaluation and Development Strategy of the Tourism Industry in Huanggang City,F592.7
  20. Research on Rural Information Promoting Urban-rural Integration in Jiangsu Southern Area,F127;F224
  21. The Design of Information System of Power Equipment Current-carrying Faults Diagnosis,TP311.52

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
© 2012 www.DissertationTopic.Net  Mobile