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Calibration System for Angular Vibration Using Precision Rotary Encoder
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고정밀 회전엔코더를 이용한 회전진동 교정시스템

논문 기본 정보

Type
Academic journal
Author
Nam, Seunghwan (과학기술연합대학원 측정과학) Baik, Kyungmin (한국표준과학연구원 유동음향센터) Cheung, Wan-Sup (한국표준과학연구원 유동음향센터)
Journal
The Acoustical Society Of Korea 한국음향학회지 한국음향학회지 제33권 제1호 KCI Accredited Journals
Published
2014.1
Pages
31 - 39 (9page)

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Calibration System for Angular Vibration Using Precision Rotary Encoder
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In this paper, two calibration methods for angular vibration pickups using a precision rotary encoder are proposed. The KRISS (Korea Research Institute of Standards and Science) primary angular vibration calibration system and the calibration procedures are briefly explained. The rotary encoder is shown to be calibrated in two methods: The one is to use the laser interferometer to calibrate the rotary encoder under test and the other is to exploit the certificate of the encoder supplied. Complex sensitivities measured from the first are shown to be less than 0.1 % difference in magnitude and $0.01^{\circ}$ difference in phase shift in reference to those of the primary calibration system. Their expanded uncertainties were observed to be less than 0.6 % in magnitude and $0.4^{\circ}$ in phase shift over the range of 0.4 to 200 Hz. Under the same calibration conditions, complex sensitivities evaluated by the second method are shown be 0.1 % difference in magnitude and $0.6^{\circ}$ difference in phase shift in reference to those of the primary calibration system. Their expanded uncertainties were seen to be less than 4.8 % in magnitude and $2.8^{\circ}$ in phase shift.

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