Abstract
The lateral stability control of the vehicle can avoid serious traffic accidents when it had a tire blowout during the operation. This article proposes a robust nonlinear control method for controlling vehicle lateral stability after a tire blowout. To be exact, a seven degree of freedom dynamic model of vehicle with modified Dugoff tire model is established. The yaw moment of vehicle is performed by differential braking once the tire blowout occurring. As for control strategy, taking the linear two degree of freedom vehicle model as the reference, using the deviation of yaw rate and the vehicle side angle between the actual value and the reference value as the controller input parameters, the fractional calculus theory is utilized for yaw moment controller which was investigated by regulating the brake moment of blowout vehicle for improving its stability. The results of computer simulation show that the design controller of fractional PID can more effectively enhance the blowout vehicle performance stability compared with the vehicle with the non control, PID control, no matter in straight road or curve road.
Highlights
It is a dangerous accident that a vehicle has a tire blowout on a highway
This paper proposes a controller based on fractional calculus for controlling a tire blowout vehicle
A 7-DOF nonlinear vehicle model combining with Dugoff tire blowout model was established
Summary
It is a dangerous accident that a vehicle has a tire blowout on a highway. As reported in the National Highway Traffic Safety Administration, about 738 people died due to tire relatedcrashes in 2017 before the vehicle is equipped with the tire pressure monitoring systems (TPMS). TPMS can monitor tire pressure, indicating abnormal tire pressure and reducing the occurrence of tire blowout, it has less effect on vehicle control after the tire blowout. This is because that the sudden occurrence of tire blowout causes the driver to be too late to respond. It’s worth the effort to design an active control method to ensure the vehicle stability after a tire blowout
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