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Piezoelectric ultrasonic vibration hopper small study

Author: XiangChaoQun
Tutor: He
School: Liaoning University of Technology
Course: Mechanical Design and Theory
Keywords: Vibration hopper Piezoelectric actuation Ultrasonic vibration Traveling wave Dynamic Design
CLC: TB559
Type: Master's thesis
Year: 2012
Downloads: 44
Quote: 0
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Abstract


In recent years , the piezoelectric drive and control technology in China developed rapidly , especially in the field of ultrasonic vibrating conveyor has been widely used. In this paper, the National Natural Science Foundation of China ( Project Number: 50675094 ) a continuation of the background of the existing material handling and supply technologies , based on a novel small piezoelectric ultrasonic vibration hopper structure scheme and produced corresponding physical prototype . Based on conventional hopper structure, the vibration of elastic body theory, the teeth of the internal cone with trapezoid cylindrical piezoelectric vibrator feed structure. Using ANSYS finite element software oscillator feeding Modal dynamic analysis, the oscillator feeding structure size and ceramic paste schemes are preferred . Dynamic design based on finite element results and consider the feasibility and precision machining requirements designed and fabricated cylindrical cone vibrator . Developed a discharge end of the transducer diameter of 16mm and a small ultrasonic vibration hopper prototype devices. The prototype to third-order in-plane bending mode of operation modes . Using a laser vibrometer and based on the principle of reflection plane mirror designed tooth surface corresponding oscillator test system , and has been processed oscillator modes and resonance frequency of the test. The oscillator frequency is 22261Hz. Experimental results show that the vibration hopper vibrator can produce relatively uniform wave . Thesis vibration hopper device assembly and operation of the machine on the effect of , when a certain voltage is applied to the transducer excitation , the hopper has a certain distribution of materials controllability .

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Ultrasonic Engineering > The application of ultrasound
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