Tie Rod Force Estimation in Steer-by-Wire Systems Using Intelligent Model Transition

Publication: DE102023106248A1
Published: 2024-04-04
Family Size: 1
Granted: No

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention introduces a method for estimating the tie rod force in the steering device of a vehicle equipped with a steer-by-wire system. The method involves analyzing vehicle sensor signals to generate two different models of side forces, converting these side forces into tie rod forces using steering geometry data, and then combining the results into a single, weighted estimate of the tie rod force.

Use CasesContent extracted from patent full text and abstract with AI.

  • Improving the accuracy of tie rod force estimation in modern electric steering systems (steer-by-wire) for passenger and commercial vehicles.
  • Enhancing the reliability and safety of autonomous vehicle steering through better force estimation.
  • Diagnostic and monitoring tools for understanding steering loads during vehicle testing and development.
  • Real-time adaptation for active steering controls in advanced driver assistance systems (ADAS).

BenefitsContent extracted from patent full text and abstract with AI.

  • Provides a more accurate and reliable estimation of tie rod forces by utilizing multiple models and data sources.
  • Enables improved safety and performance in steer-by-wire automotive systems.
  • Facilitates the integration of advanced control features in autonomous and semi-autonomous vehicles.
  • Allows for real-time monitoring and adaptation, supporting predictive maintenance and vehicle diagnostics.

Technical Classifications (CPCs)

Main Classifications

Manufacturing & Transport

Sub Classifications

Land Vehicles (Non-Rail)

CPC Codes

B62D6/008

Inventors & Applicants

Applicants

Friedrich Alexander Univ Erlangen Nuernberg Koerperschaft des Oeffentlichen Rechts

Schaeffler Technologies Ag

Patent Abstract

Die Erfindung betrifft ein Verfahren zur Schätzung einer Spurstangenkraft einer Lenkvorrichtung eines Fahrzeugs mit folgenden Verfahrensschritten:(a) Es werden zunächst aufgrund von Messwerten und/oder Sensorsignalen aus dem Fahrzeug zwei Modelle (1, 2) ausgewertet, um jeweils eine erste und eine zweite Seitenkraft zu erhalten;(b) Die erste und die zweite Seitenkraft wird jeweils anhand von Kenngrößen der Lenkgeometrie (3) in eine erste und eine zweite Spurstangenkraft umgerechnet;(c) Die erste und die zweite Spurstangenkraft werden miteinander kombiniert, um eine dritte Spurstangenkraft zu erhalten, wobei die dritte Spurstangenkraft eine gewichtete Kombination der ersten und zweiten Spurstangenkraft ist.

Key Information

Publication No.

DE102023106248A1

Family ID

90246318

Publication Date

2024-04-04

Application No.

DE102023106248A

Application Date

2023-03-14

Priority Date

2022-09-30

Granted

No

Possible Cooperation

For further information please contact the transfer office.