Compromise Between Sensing of Critical Cornering and Drift Control

To provide good vehicle control in critical cornering, it is important to be able to sense the point of critical cornering. Even if the point of critical cornering is exceeded, it is possible to control the vehicle when drift control is good. As such, a compromise exists between the sensing of critical cornering and drift control. Experiments using a driving simulator were performed on different subjects to investigate this trade-off. It was found that the driver was able to sense the point of critical cornering easily from the change in body slip angle, and to control drift easily with a large body slip angle, in which the tire can attain a high cornering force. When the roll rigidity was low, however, drift control deteriorated although the sensing of critical cornering improved. Therefore, a moderate level of roll rigidity or roll rigidity control is desired to achieve a balance between these two factors.