Dissertation > Excellent graduate degree dissertation topics show

Study of Medium and Small Power Ultrasonic Power Supply Based on DSP for Al Casting-Rolling

Author: LeiLiZuo
Tutor: LiaoLiQing
School: Central South University
Course: Control Science and Engineering
Keywords: Power ultrasonic casting Ultrasonic Power Dynamic Matching Fuzzy power adjustment Digital PLL
CLC: TN86
Type: Master's thesis
Year: 2010
Downloads: 104
Quote: 4
Read: Download Dissertation

Abstract


Aluminum materials in industrial production and daily life are widely used, aluminum slab grain size is directly related to the quality of aluminum sheet , aluminum metal in the casting process into ultrasound, the use of ultrasonic cavitation and acoustic streaming effect can effectively refine aluminum grain size, improve product quality. Casting for the ultrasonic power ultrasonic power ultrasonic machining technology is a key part of its performance directly affects the processing of the results. Therefore, this power exists for the ultrasonic power control , frequency tracking , transducer match, load matching problem is studied , and gives the power components used in the relevant parameters . By analyzing the structure of ultrasonic power , combined with its maximum output power to determine the use of non-controlled rectifier diode for DC , Buck converter to achieve power regulation, half- bridge inverter for ultrasonic ultrasonic frequency alternating current power supply design. For ultrasonic transducer operates in resonant capacitance when nature was to compare the static and dynamic matching matching in two ways, through online testing with its static capacitance inductance adjusting digital dynamic matching approach to achieve efficient and designed with high-frequency pulse transformer load side and the supply side impedance ; against transducer changes due to temperature variation causes the resonant frequency , DSP digital PLL frequency tracking mode regulator inverter frequency to achieve its frequency tracking ; for Buck Converter model complex and nonlinear characteristics of strong , using fuzzy control to achieve good power control effect. Simulation results show that : the use of fuzzy power adjustment method can achieve rapid and stable system power regulation , the digital phase-locked loop to join in its work to ensure the load resonant state. Thesis work done on the development of high power ultrasonic casting power has an important reference value.

Related Dissertations

  1. DSP-based research IGBT induction heating power supply,TM924.5
  2. The Study and Design on Laser Wireless Communication and Error Code Detecting System Based on Ethernet,TN929.1
  3. On the Experimental Apparatus for Ultrasonic Disruption in the Treatment of Intracerebral Hematoma,R318.6
  4. A Research and Its Implementation on Synchronization Technology in the Fields of Communication Net for Specialized Purpose,TN915.85
  5. IF -based digital PLL phase noise testing a new program of,TN911
  6. A Study on Extraction Process of Honeysuckle,TQ461
  7. Study on Opto-electronic Hybrid Current Transformer,TM452
  8. Research on Control of Film Transmit Machinery of Capstan Imagesetter,TH744.5
  9. FPGA-based technology research phase frequency tracking method,TN911.8
  10. The Study of Intermediate Frequency Power Supply Control Circuit Base on FPGA,TN86
  11. New aluminum casting power ultrasonic Research and Design,TM46
  12. Design and Testing of 6.5MHz Ultrasound Transducer for Metrology,TB552
  13. Capacitors ( series resonant ) frequency power supply AC voltage test systems research,TM464
  14. Statistical Analysis the Collection and Distribution Function Structure of Comprehensive Passenger Hub,U115
  15. Theoretical Model of Ultrasonic Crushing Granulation Method and Key Technologies,TB559
  16. Dynamical System Design and Experimental Study of the Electric Bus,U469.72
  17. Shortwave radio frequency source synchronous design and research,TN74
  18. The nature of corporate strategy : co-evolution of the dynamic match,F270
  19. Development of a Rotary Ultrasonic Machine and Experimental Study of Machining on the Machine,TG663
  20. Development and Output Power Measurement of Lithium Niobate High Frequency Ultrasonic Transducer,TB552

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Power supply
© 2012 www.DissertationTopic.Net  Mobile