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http://dx.doi.org/10.5050/KSNVN.2008.18.9.905

Estimation of Sensitivity Axis Offset of an Accelerometer for Accurate Measurement of the 6 DOF Human Head Motion  

Lee, Jeung-Hoon (삼성중공업 대덕선박연구센터)
Kim, Kwang-Joon (한국과학기술원 기계공학과)
Jang, Han-Kee (두산인프라코어 예측설계기술팀)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.9, 2008 , pp. 905-912 More about this Journal
Abstract
Notion sickness is well known to be caused by long time exposure to the very low frequency motion in the multiple axes of human body Since the vestibular system for the perception of low frequency motion is located in the head, accurate measurement of 6 degree of freedom head motion is of great importance. In this study, the measurement system consisting of a safety helmet and 9 translational accelerometers was constructed for the estimation of 3 translational and 3 rotational motions of human head. Since estimation errors of 3 rotational components can be significantly magnified even by small offset of the sensitivity axis from the geometric center of an accelerometer, accurate measurement of sensitivity axis must be preceded. The method for accurate estimation of the offset was proposed, and the effect of offset on the estimation of angular acceleration was investigated.
Keywords
Human Head Motion; Translational Accelerometer; Sensitivity Axis; Offset;
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  • Reference
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