제어로봇시스템학회논문지 (Journal of Institute of Control, Robotics and Systems)
- 제5권2호
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- Pages.200-207
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- 1999
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- 1976-5622(pISSN)
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- 2233-4335(eISSN)
초음파 변환기의 감도 교정 시스템 구성
Design of the Calibration System for Determining the Sensitivity of Ultrasonic Transducer
초록
In this paper, a precise sensitivity measurement system of ultrasonic transducer in the frequency range from 1 MHz to 15 MHz, which can implement the reciprocity principle is constructed. All of the elements of this system such as the ultrasonic preamplifier, ultrasonic absorber, water tank, water degassing system, and four-axes translator and reflector are constructed. For the performance evaluation of the calibration system, a standard hydrophone precisely calibrated from PTB(Physikalisch Technische Bundesanstalt) in Germany are used. And the system parameters which affected the evaluation of the measurement accuracy and the reproducibility in various measuring conditions are considered. The measurement uncertainty of the calibration system is estimated within
키워드