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Research of the DSP-based Ultrasonic Power Supply System

Author: XueJia
Tutor: GeHongJuan
School: Nanjing University of Aeronautics and Astronautics
Course: Power Electronics and Power Drives
Keywords: ultrasonic power supply frequency tracking piezoelectric transducer digital control resonance
CLC: TN86
Type: Master's thesis
Year: 2009
Downloads: 63
Quote: 3
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Abstract


With the development of national economy, ultrasonic technology has received more and more usage in various kinds of industry. The ultrasonic clearing, as a very important application in the domain of power ultrasonic technology, has a good many advantages, so it is playing much more important role in the industry and agriculture and daily life. Ultrasonic clearing machine is made of the ultrasonic power supply, the ultrasonic transducer and the cleaning tank. As very quick development of digital control in recent years, the prospect of the power and electric equipment based-on digital control are absolutely fine. So, the study of ultrasonic power supply based-on digital control has important practical value.Firstly, impedance characteristics of the piezoelectric transducer are analyzed in details in this paper. Then, the load that is equivalent to piezoelectric transducer is operated in resonance state through calculating the parameters of matching electric circuit. Secondly, the simulation models of ultrasonic power supply system based-on DSP are created. The simulation models are analyzed in SABER software and simulation results are given. Thirdly, the ultrasonic power supply system based-on TMS320LF2407 DSP that is manufactured by TEXES INSTRUMENT corporation is designed on the basis of the theory and simulation analysis. The theory and designing progress of hardware electric circuit and software in the system are introduced. Finally, the experiment is done in this paper. The experiment results indicate that the system has certain output bandwidth and achieves the goal of resonance.

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