Determining a maximum frictional-connection coefficient

US11260870B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Robert Zdych · Friedrichshafen, DE
• Heinz-Joachim Gilsdorf · Gerolzhofen, DE
• Volker Wagner · Mühlacker, DE
• Ulrich Mair · Friedrichshafen, DE
• Lara Ruth Turner · Markdorf, DE
• Julian King · Rankweil, AT

Key dates

• Filing date: Jan 31, 2018
• Grant date: Mar 1, 2022
• Expiry date: Jun 20, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C5/0808
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A tire (100) rolls on a surface (105). A method (600) for providing maximum traction coefficient between the tire (100) and the surface (105) include steps for detecting a momentary slip of the tire (100) on the surface (105); detecting a momentary traction coefficient; forming a tuple (410, 510) from the slip and the current traction coefficient; choosing a characteristic curve (205, 305) from a number of predetermined characteristic curves (205, 305) on the basis of the tuple (410, 510), whereby each characteristic curve (205, 305) describes a traction behavior of the tire (100) or a corresponding characteristic pitch; determining the maximum traction coefficient on the basis of the selected characteristic curves (205, 305); and thus providing the maximum traction coefficient.