Rollover prevention for sport utility vehicles using a pulsed active rear-steering strategy

摘要

Vehicle rollovers are a serious safety issue for drivers and passengers and have led to many fatal accidents on the road. This paper describes a system and a method of enhancing vehicular stability to reduce the likelihood of rollover for motor vehicles, and in particular for sport utility vehicles. Under the concept of pulsed active steering, one control strategy called pulsed active rear steering was investigated and is discussed in detail. To verify this system, the yaw and roll model was derived and the pulse signal parameters (the frequency and the amplitude) were evaluated to determine their optimum values. A full-vehicle model was built in CarSim and co-simulated with MATLAB/Simulink as the control module. Moreover, we designed and prototyped the proposed system for a sport utility vehicle and then conducted road tests with different manoeuvres. The results from simulations and experiments confirmed that the proposed pulsed active rear-steering system is promising for rollover prevention of sport utility vehicles.