TitleThree-Dimensional Global Acceleration Estimation in the Presence of Rotation Using an Inertial Measurement Unit for Whole Body Vibration Studies.
Publication TypeJournal Article
Year of Publication2019
AuthorsKonda, RR, Ryu, J-C, Kim, JH
JournalInt J Occup Saf Ergon
Date Published01/2019

Whole body vibration (WBV) is associated with various adverse health outcomes among professional vehicle operators. Due to rough terrain, off-road vehicle operators are likely exposed to not only a high level of WBV but also different types of WBV (i.e. significant non-vertical and/or rotational accelerations). To evaluate the effects of these different WBV exposures on human responses, it is necessary, as the first step, to correctly estimate the acceleration of the vehicle by taking account of not only translational, but also rotational motion. The main objective of this study was to propose and evaluate an algorithm to accurately estimate global acceleration of a vehicle using magnitude-based filtering and inertial navigation with an inertial measurement unit (IMU). In a laboratory experiment where a 6 df robotic arm generated a three-dimensional motion at three different frequencies (2.3 Hz, 4.5 Hz, 8.5 Hz), local acceleration data were collected at the sampling frequency of 409.6 Hz in the presence of rotational movements. Using our proposed algorithm, the global acceleration was calculated and compared to the reference acceleration data. The results show that our proposed algorithm provides a good estimation of global acceleration even when rotational movement is not negligible.

Alternate JournalInt J Occup Saf Ergon
PubMed ID30614415