Method for identifying a driving resistance of a motor vehicle

US8560186B2 · kind B2 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Martin Roth · Taufkirchen, DE
• Klaus Bastian · Bad Liebenzell, DE
• Tobias Radke · Stuttgart, DE
• Peter Megyesi · Leonberg, DE

Key dates

• Filing date: Apr 5, 2011
• Grant date: Oct 15, 2013
• Expiry date: Dec 16, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60W2520/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for identifying a driving resistance of a motor vehicle includes the steps of recording values of control and/or state variables of the vehicle during a driving state of the vehicle when a control route is covered, adapting parameters of a vehicle model and/or a model of the area surrounding the vehicle on the basis of the values of the recorded control and state variables, identifying the driving resistance on the basis of the adapted vehicle model and/or the surrounding area model, wherein the parameters of the vehicle model and/or the surrounding area model are adapted on the basis of a distinction between driving states, wherein these driving states include a driving state of a closed drive train with a positive driver demand torque, a driving state of a closed drive train without a positive driver demand torque, and/or and a driving state with an open drive train.