The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Apr. 29, 2020
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Georg Tardy-Tuch, Unterreichenbach-Kapfenhardt, DE;
Dario Düsterloh, Vaihingen an der Enz, DE;
Abstract
A method for 'hands-on' identification on a steering system having two subsystems connected to one another by an elastic connection. The elastic connection has a static friction state and a sliding friction state for a respective set of external state variables. The steering system is excited by an excitation vibration, which is generated by a controllable vibration generator and has a respective excitation amplitude and a respective excitation frequency, for a respective set of external state variables, in which the respective excitation amplitude and the respective excitation frequency for the currently present set of external state variables are taken from a prescribed table and the vibration generator is controlled with them. A reaction torque to the excitation vibration is measured using a sensor. A phase difference between the excitation vibration and the reaction torque is calculated to identify a 'hands-off' state as well as a “hands-on” state.