Comparison of Transfer Function Models to Represent the Correlation Between Vehicle Lateral Acceleration and Head Tilting Angle in Motion Sickness

Motion Sickness (MS) is described as an unpleasant feeling caused by a forceful movement; hence vehicle movement impacts the severity of MS. While negotiating curve, drivers and passenger tilt their heads differently, affecting motion sickness incidence (MSI), which MS negative feeling, that affects occupant’s comfort, to further understand correlation between occupants' behavior in then represent it using mathematical models, was proven MSI could be predicted through models. However, there indefinite value values movement. Based on vital express mathematically. An experiment adopted from prior study utilized get data develope models with different proportions occupant transfer function equations system identification (SI), utilising black-box feature use experimental input output allow SI predict The aim this investigate factors relation behavior, develop multiple analyze compare them. results were obtained three orders, second, third fourth order functions for each proportion used both driver passenger, models’ 64.68%-67.87%, 63.75%-67.93%, after comparison highest fits obtained. amongst 67.87% (4th Order), 66.78% (3rd Order) 65.17% (2nd 67.93% 66.3% 64.82% Those validated via Simulink unseen not process, lastly Root Mean Square Error (RMSE) all them determine efficiency.