Model-Based Design of a SUV Anti-rollover Control System

Abstract

This article presents a methodology to apply Model-Based Design to develop and automatically optimize vehicle stability control systems. Such systems are employed to improve the dynamic rollover stability of Sport Utility Vehicles (SUVs). A non-linear vehicle model, representative of a midsize SUV, was built in CarSim®. This vehicle model is used in Simulink® to design a control system that reduces the risk of rollover. Optimization methods are then used to automatically adjust controller parameters to meet the system specifications that ensure the stability of the vehicle. Cosimulation between the two software packages enables rapid design and verification of control algorithms in a virtual environment. The results of the simulation experiments can be visualized through a 3-D animation of vehicle motion. The control system is adapted for the specific vehicle model, enabling it to remain stable under standard test conditions. The National Highway Traffic Safety Administrations' (NHTSA) fishhook maneuver was used to estimate dynamic rollover stability of the vehicle and benchmark the performance of the SUV both with and without the optimized controller.

Lateral Stability Control of Car-Trailer Combination Based on 4WS

“…1. Some literatures investigated lateral stability control system for tractor semi-trailer using vehicle dynamics control system (VDC), or electronic stability programs (ESP), which prevents vehicles from spinning, drifting out and rolling [3][4][5][6][7]. Some documents studied lateral stability control based on the position of tractor hitch, also known as the fifth wheel.…”

Risk assessment of vehicle cornering events in GNSS data driven insurance telematics

“…The exact process of calculating these measurements is typically unknown. However, given the methods presented in the literature [34], [35], we will assume that do n is derived from a preceding measurement of the two-dimensional velocitỹ v n = ṽ (1) nṽ (2) n . The measurements are modeled according toṽ n = v n + w vn , where v n denotes the true velocity, and w vn is assumed to be white noise with covariance σ 2 wv I 2 .…”

“…Despite efforts to stabilize rollover inclined vehicles, e.g., sport utility vehicles [1], and efforts to improve the conditions of the road surface and the quality of the tires, skidding and rollover events still play a major role in many of today's car accidents. Moreover, statistics show that even though only three percent of all vehicle crashes involve a rollover, approximately onethird of all passenger deaths are related to rollover events [2].…”

Investigations on vehicle rollover prevention using open loop steer-by-wire system

“…It was found by Chen that, even under ideal circumstances, the largest forward prediction in time, and hence the largest amount of warning a driver can feasibly use, is 0.3 seconds when considering an SUV [8]. Such warnings are barely at the limit of human reaction times for unexpected events.…”