Patent ID: 9221494
Filing Date: 2015-12-29
Classification: B62D

Abstract:
1. A method of controlling directional stability of a vehicle having a steering system comprising an active power steering assistance system, the method comprising: a) acquiring vehicle dynamics data; b) identifying a state of directional stability from the acquired vehicle dynamics data; c) measuring a torque of the steering system, at least in the directional stable state of the vehicle; d) calculating a final compensation torque; e) actuating the active power steering assistance system with the final compensation torque to counter-compensate the torque of the steering system and measured in step c), f) providing a torque value on a basis of the vehicle dynamics data acquired in step a); g) calculating a torque component from the torque measured in step c), minus the torque value provided in step f); h) calculating a preliminary compensation torque on a basis of the torque component calculated in step g); and i) calculating the final compensation torque in step d) from a sum of the preliminary compensation torque calculated in step h) and the torque value provided in step f).