The transducers that work based on the principle of piezoelectric effect are collectively called piezoelectric transducers

Update time:12-08-2020
Summary:

The transducers that work based on the principle of pie […]

The transducers that work based on the principle of piezoelectric effect are collectively called piezoelectric transducers.
In the field of power ultrasound, the most widely used is the sandwich piezoelectric transducer
Energy device, also known as composite rod transducer or Langzhiwan transducer
, In addition to the commonly used longitudinal vibration mode transducers, in order to adapt
In order to meet the needs of new ultrasonic technology, the torsional vibration mode and bending vibration
Dynamic mode, longitudinal 9 torsion and longitudinal 9 bending combined mode power ultrasonic transducer
The analysis theory has developed from one-dimensional to three-dimensional, except for the traditional
In addition to the equivalent circuit method and the wave equation method, some approximate analysis
Methods, such as equivalent elastic method and finite element method, etc., in large-scale power
The analysis of ultrasonic transducers has been widely used, some large-scale
The numerical analysis software can not only analyze the vibration of the transducer
Mode and resonance frequency, and can give the transducer
Position, stress and strain state at any moment, and displacement
Cloth, which is very suitable for the optimized design of the transducer. At present, the power ultrasound
The working frequency of the transducer is also changed from the commonly used lower frequency
, Developed to higher frequencies (such as hundreds of kilohertz or even mega
Hertz order of magnitude), such as megahertz transducers used in silicon wafer cleaning
And small high-frequency ultrasonic welding machine for integrated circuit micro-spot welding machine,
In addition, the working frequency of the transducer has also developed from a single working frequency to
Multiple operating frequencies, such as multi-frequency transducers used in ultrasonic cleaning
And broadband transducers, etc., as well as dual work used in ultrasonic welding
Frequency ultrasonic vibration system, etc., the power capacity of a single transducer also varies from
The development of tens of watts to hundreds of watts or even several kilowatts.

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