Progress in development of primary angular vibration calibration systems |
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| Wan-Sup Cheung, Sang-Myong Park |
- Abstract:
- The angular vibration calibration system is not well established even in most of NMI’s. Moreover, it is not certain that suppliers of angular vibration pickups have well maintained the traceability of their calibration systems, unlike the linear vibration calibration systems well established in the industrial sector. This paper points out several technical issues encountered in setting up the angular vibration calibration system in KRISS. The first was to develop a new angular vibration exciter that is not commercialized yet. The angular vibration calibration system can not do without the angular vibration generation apparatus. The multi-layered PCB manufacturing technology is exploited to make the rotating coil designed to generate the Lorenz force. The first prototype model of the angular vibration exciter built up in KRISS is illustrated in this paper. It is shown to meet the requirements of the amplitude stability, the total harmonic distortion, and the hum and noise components, recommended in Clause ISO16063-15. Furthermore, it is shown the measured frequency responses that it can generate angular vibration over the frequency range of 5 Hz to 1 kHz (or more). Main features of the angle prism based interferometer set up in KRISS are addressed. Three uncertainty components are introduced and their evaluated uncertainty contribution is demonstrated. Those results are very useful to judge the measurement capability of the angle prism based interferometer.
- Keywords:
- angular vibration, angular exciter, primary vibration calibration, laser interferometer
- Download:
- IMEKO-TC22-2007-104u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC22
- Event name:
- Cultivating metrological knowledge
- Title:
- 1st Conference on Vibration Measurement (together with 20th TC3 Conference on Measurement of Force, Mass and Torque & 3rd TC16 Conference on Pressure Measurement)
- Place:
- Merida, MEXICO
- Time:
- 27 November 2007 - 01 December 2007