This paper presents a method to design a robust controller for rollover prevention. Several types of controllers for rollover prevention have been proposed in such a way to minimize the lateral acceleration and the roll angle. The rollover prevention capability of these controllers can be enhanced if the controlled vehicle system is robust to the variation of the height of the center of gravity...

The yaw moment control is the most efficient method for improving vehicle handling and stability. A corrective yaw moment should be applied to the vehicle in order to modify the dynamic behaviour of vehicle. This corrective yaw moment is related to the interaction between the tires and road. Therefore generating corrective yaw moment independent from the tire-road interactions is noteworthy. In...

An anti-rollover control algorithm based on the Time-To-Rollover (TTR) metric is proposed in this paper. A simple model with steering and direct yaw moment control inputs was constructed to calculate the TTR in real-time. The TruckSim dynamic simulation software was used to verify the control performance, as well as to simulate the system dynamics in the UM-Oakland driving simulator. Both the s...

The theory of a jamming transition is proposed for the homogeneous car-following model within the framework of the Lorenz scheme. We represent a jamming transition as a result of the spontaneous deviations of headway and velocity that is caused by the acceleration/braking rate to be higher than the critical value. The stationary values of headway and velocity deviations and time of acceleration...

Variation in the angle α between a pulsar’s rotational and magnetic axes would change the torque and spin-down rate. We show that sudden increases in α, coincident with glitches, could be responsible for the persistent increases in spin-down rate that follow glitches in the Crab pulsar. Moreover, changes in α at a rate similar to that inferred for the Crab pulsar account naturally for the very ...

This paper presented a new method for four wheel in-wheel-motored electric vehicle to improve handling and stability with the help of sideslip angle observer and braking force distribution. The first part of this study deals with the full description of the basic theory of vehicle dynamic control system. After that four wheels in-wheel-motored electric vehicle dynamics model, as well as desired...

We propose a simple rubber friction law, which can be used, for example, in models of tire (and vehicle) dynamics. The friction law is tested by comparing numerical results to the full rubber friction theory (Persson 2006 J. Phys.: Condens. Matter 18 7789). Good agreement is found between the two theories. We describe a two-dimensional (2D) tire model which combines the rubber friction model wi...

The authors investigated the role of perceptual attunement in an emergency braking task in which participants waited until the last possible moment to slam on the brakes. Effects of the size of the approached object and initial speed on the initiation of braking were used to identify the optical variables on which participants relied at various stages of practice. In Experiments 1A and 1B, size...

In this paper, potential benefits of a brake operated pre-crash active seatbelt system are analyzed with experimental verifications and numerical simulations. The system is activated at the time of emergency braking operation. The statistical data from real world accidents (Japan) as well as driving simulator analysis show that drivers interact with the brake to avoid crash in about 50% of the ...