Ultrasonic transducer is an energy conversion device, its performance description
Many parameters are needed for evaluation & the characteristic parameters of ultrasonic transducer include
Resonance frequency, bandwidth, electromechanical coupling coefficient, electroacoustic efficiency, mechanical
Quality factor, impedance characteristics, frequency characteristics, directivity, transmission and reception
Sensitivity, etc. & the performance parameters of transducers for different purposes
Different, for example, for transmitting ultrasonic transducer, the transducer is required to have
Large output power and high energy conversion efficiency; while for receiving type
Ultrasonic transducers require a wide frequency band and high sensitivity and resolution
Rate, etc. Therefore, in the specific design process of the transducer, it must be based on
Specific applications, reasonable design of the relevant parameters of the transducer
In addition, with the development of numerical computing technology and new types of energy conversion
The research and development of the transducer, the numerical calculation method obtained in the analysis of the transducer
Wide range of applications & In the design process of ultrasonic transducer, finite element calculation
Calculation methods are favored, and the most common commercial software is
45676& Among the problems related to transducer design are mainly structure
Analysis, piezoelectric coupling analysis, fluid 3 structural coupling analysis, and sometimes
To use electromagnetic field analysis, thermal analysis, etc. & design analysis with 45676
The outstanding advantage of the transducer is that it is not limited by the structure and size of the transducer
System, can design the transducer with complex structure & use finite element software
The design of the transducer can easily calculate the resonance frequency of the transducer
Rate, observe the displacement distribution of each part of the transducer at resonance, and get the transducer
Admittance curve, frequency response curve and directivity of transmitter and receiver
Figure, can also optimize the structure of the transducer
Performance parameters of ultrasonic transducer
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