Effects of motion cueing on longitudinal acceleration perception in a driving simulator

The driveability of a new heavy-truck driveline is traditionally assessed using physical prototypes.

Enabling early evaluation of the driving experience in a human-in-the-loop driving simulator using a virtual prototype has the potential to significantly improve development efficiency.

To enable driveability assessment using a moving-base simulator, participants must be able to perceive small differences in longitudinal acceleration.

The just-noticeable difference (JND) was therefore evaluated for two variants of the classical motion-cueing algorithm (MCA) tuned specifically for tip-in/launch tests and compared to a more general variant in a driving simulator with a long linear track.

Psychometric functions were fitted to responses obtained using a weighted staircase procedure and analysed using a generalized linear model.

No significant differences in JND were found between the motion cueing variants.

The mean JND across all participants and MCA variants was 5.4%.

The mean point of subjective equality in the JND experiment was -1.9%, suggesting that participants perceived the acceleration as higher in the second stimulus of a pair.

In a subjective comparison, most participants preferred the motion cueing variants that were tuned for launch manoeuvres over the general variant.