Sudden Loss of Steering Assist Simulation Methodology Development and Validation

The aim of this study is to develop a validated simulation method that accurately predicts vehicle behaviour during a sudden loss of assist while cornering. The method also evaluates the steering effort required to return the vehicle to its intended path during failure scenarios, isolating the impact of uncertainties arising from driver performance. To illustrate the simulation methodology, the study involved testing various vehicles under conditions replicating sudden EPS assist loss during cornering. These tests captured the vehicle’s response and the steering effort needed to correct its path. Different parameters affecting the vehicle behaviour was studied and a validated method of simulation was developed.