Dissertation > Excellent graduate degree dissertation topics show

The Design of Excitation Power Supply for Ultrasonic Guided Wave Detection

Author: ZhuJuanJuan
Tutor: ChenDaYue
School: Shanghai Jiaotong University
Course: Instrumentation Engineering
Keywords: ultrasonic guided wave excitation source narrow-band wave generator power amplifier
CLC: TP274.53
Type: Master's thesis
Year: 2011
Downloads: 136
Quote: 0
Read: Download Dissertation

Abstract


Comparing with traditional NDT technologies, the ultrasonic guided wave technology is faster, more reliable and economical. Therefore, it is widely applied to inspect a variety of structures, such as pipe, railway and bolt. The excitation power supply plays an important part in the study of ultrasonic guided wave detection system, and develops as the ultrasonic guided wave technology develops. At present, ultrasonic guided wave detection systems almost are made by foreign organizations and hard to further develop. The excitation power supply also could be made up of independent devices. However, those purchasable devices are usually functional, but too large, too heavy to take outside easily. Thus, the design of the excitation power supply for ultrasonic guided wave detection, on basis of features of the ultrasonic guided wave detection, has reference value for the study of ultrasonic guided wave technology.The excitation power supply for the ultrasonic guided wave detection has two parts: the narrow-band waveform generator and the power amplifier.On basis of the narrow-band characteristic of ultrasonic guided wave detection signal, it is proposed to realize the narrow-band signal by modulating the signal-frequency signal with Hanning window. The waveform generator system is separated into carrier signal and modulation signal module, control circuit module, AM and analog switch module. Each module is in detail described. The simulation proved its feasibility.The design of the power amplifier includes design indexes, circuit structure design, simulation and debugging. First of all, determine a proper class of operation and circuit structure. Secondly, separate the system into dc biasing circuit, filter circuit, linearization technology, cooling technology, and broadband matching network. In detail describe the function, circuit structure, and design method of each module. At last, the simulation and circuit debugging prove the feasibility, and provide experience for further improvement.This design proposes a feasible design scheme of the excitation power supply for the ultrasonic guided wave detection. The debugging circuit basically reaches the design index. And the reasons for that unreached index are put forward, as well as how to improve the circuit.

Related Dissertations

  1. Research and Improvement of Multi-Level Modulation Self-Adaptive Digital Predistortion Algorithm,TN722.75
  2. Design of Digital Predistorter for RF Power Amplifier Based on FPGA,TN722.75
  3. Research on Power Supply of Contactless Power Transfer System,TM46
  4. Design Power Amplifier of Basestation and Study on Predistortion System,TN722.75
  5. The Hebei Nanpai at the Seventh City Games and Effect Analysis Research Work,G842
  6. A Kind of High Efficient D Class Audio Power Amplifier Design,TN722.75
  7. Study on Behavoral Models of Radio Frequency Power Amplifier,TN722.75
  8. 30MHz ~ 512MHz wideband amplifier design,TN722.75
  9. Research of Spectral Beam Combining Technology for High Power Fiber Lasers,TN248
  10. Design and Implementation of Power Amplifier Control Board of Photolithography Motion Platform,TN305.7
  11. Research on 60GHz Millimeter-wave Power Source in CMOS Technology,TN722.75
  12. S-Band RF Power Amplifier Design Method,TN722.75
  13. Design of RF Power for RF-excited CO2 Laser,TN248.22
  14. The Research of Switching Power Amplifier for Microprocessor Relay Protection Testing System,TM774
  15. 100-400MHz broadband power amplifier design and implementation,TN722.75
  16. Integration technique based on linear RF power amplifier design Doherty,TN722.75
  17. Reinforced concrete structures interfacial debonding damage ultrasonic guided wave detection technology,TU375
  18. Research of Power and Data Wireless Transmission System for Visual Prosthesis,R318.1
  19. Research on Digital Predistortion Technique in LTE System,TN929.5
  20. UHF wideband high power amplifier Research and Design,TN722.75
  21. Design of Ultra-wideband Power Amplifier,TN722.75

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies > Ultrasonic testing equipment
© 2012 www.DissertationTopic.Net  Mobile