Performance parameters of ultrasonic transducer
The performance parameters of the ultrasonic transducer, it is an energy conversion device, its performance description and evaluation require many parameters. The characteristic parameters of the ultrasonic transducer include resonance frequency, bandwidth, electromechanical coupling coefficient, electroacoustic efficiency, mechanical quality factor
The performance parameters of the ultrasonic transducer, it is an energy conversion device, its performance description and evaluation require many parameters. The characteristic parameters of the ultrasonic transducer include resonance frequency, bandwidth, electromechanical coupling coefficient, electroacoustic efficiency, mechanical quality factor , Impedance characteristics, frequency characteristics, directivity, transmit and receive sensitivity, etc. Transducers for different purposes have different requirements for performance parameters. For example, for transmitting ultrasonic transducers, the transducer is required to have large output power and high energy conversion efficiency; for receiving ultrasonic transducers, it is required Wide frequency band and high sensitivity and resolution etc. Therefore, in the specific design process of the transducer, the relevant parameters of the transducer must be reasonably designed according to the specific application.
Ultrasonic transducer
In order to determine the working state of the transducer, the ultrasonic transducer must find the state equation of its mechanical vibration system and the circuit system state equation. The state equation of the transducer mechanical system (referred to as the mechanical vibration equation) is that the transducer is in In the working state, it describes the relationship between the force of the mechanical vibration system and the vibration speed, and the state equation of the circuit system (referred to as the circuit state equation) describes the vibration characteristics of the circuit system. Since the mechanical system and circuit system of the transducer are coupled with each other, the vibration of the mechanical system will affect the balance of the circuit, and the change of the circuit will also affect the vibration of the mechanical system, so we always use these equations to analyze, Discuss the working characteristics of the transducer.
