Dissertation > Excellent graduate degree dissertation topics show

The Method Study for Fault Diagnosis in Analog Circuits Based on Information Fusion Technique and Wavelet Analysis

Author: LiuMeiHua
Tutor: PengLiangYu
School: Hunan Normal University
Course: Physical Electronics
Keywords: analog circuit fault diagnosis neural network wavelet analysis information fusion
CLC: TN710
Type: Master's thesis
Year: 2009
Downloads: 119
Quote: 3
Read: Download Dissertation


In the paper,fault features are abstracted by wavelet analysis,then neural network and Information fusion are used to local fault competences.The main contributions in the paper are as follows:1.We designed a typical BP neural network fault diagnosis system for analog circuits and it can detect whatever fault in theory.However,in order to construct a high performance system,it is very important to extract significant features to compactly represent the circuit behavior.2.A feature extraction method of "energy-fault" diagnosis based on the wavelet transform is presented,which overcomes the disadvantages that the traditional diagnosis approaches need topology structure of analog circuit. Simulation results show that this new method is available for fault diagnosis for analog circuit.3.In order to solve the Problems of insufficient test data and low diagnosis accuracy,a fault location approach for analog circuits is developed based on intelligent information fusion technology including data fusion and neural network.Input node current and output node Voltage are abstracted by wavelet analysis,then feature fusion are used to local fault competences.The proposed approach makes full use of the fault information and has the capability to diagnose multiple and soft faults of analog circuits with satisfactory accuracy.

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. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  4. Research on Testing and Analyzing Technology for Time Parameter of Aerospace Relay,TM58
  5. Tongue Feature Extraction and Research of Fusion Classification,TP391.41
  6. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  7. Study on Virtual Detector of Infrared Hyper-Spectral Image,TP391.41
  8. The Application of Fuzzy Control and Neural Network in Planar Double Inverted Pendulum,TP273.4
  9. Research of Visual Servoing in 4-DOF Robotic Manipulator,TP242.6
  10. Research on Visual Servo System of Mechanical ARM,TP242.6
  11. Multi-Sensor Information Fusion and Its Applications on Wearable Computer,TP202
  12. Fault Diagnosis Method Based on Support Vector Machine,TP18
  13. Fault Diagnosis Research on Three-Tank System,TP277
  14. Design of Weapon Detection Device Control System,TP183
  15. Study of Event Related Potentials Based on Chinese Auditory Cognition,R318.0
  16. Municipal tourism land use planning environmental impact assessment,X820.3
  17. Research on the Inteligent System of High Performance Concrete Mix Design in Zhujiang Triangle Area,TU528
  18. Study on Taste Characteristic of Taste Peptide Enzymatic Production from Oyster Base on A Neural Network Method,TS254.4
  19. Research on the Key Technology of Waterborne Transport Security System,U698
  20. Smart Control Research in Paddy Drying Based on BP Neural Network,S226.6
  21. BP network optimization based on genetic algorithm optimization of the biodiesel process,TE667

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Electronic circuit
© 2012 www.DissertationTopic.Net  Mobile