WO2023223110 - A STEERING SYSTEM AND A METHOD OF CONTROLLING A STEERING SYSTEM
National phase entry:
Publication Number
WO/2023/223110
Publication Date
23.11.2023
International Application No.
PCT/IB2023/053468
International Filing Date
05.04.2023
Title **
[English]
A STEERING SYSTEM AND A METHOD OF CONTROLLING A STEERING SYSTEM
[French]
SYSTÈME DE DIRECTION ET PROCÉDÉ DE COMMANDE DE SYSTÈME DE DIRECTION
Applicants **
AGCO INTERNATIONAL GMBH
Inventors
KAUFMANN, Oliver
REITEMANN, Gabriel
PRESTEL, Stefan
MARTIN, Thomas
Priority Data
2207467.8
20.05.2022
GB
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2158 | |
| EPO | Filing, Examination, Granting | 8731 | |
| Japan | Filing, Examination, Granting | 2130 | |
| South Korea | Filing, Examination, Granting | 1994 | |
| USA | Filing, Examination, Granting | 5340 |
Total:
20,353
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Electro-hydraulic Steering Systems and Methods An electro-hydraulic steering system (1) comprises a hydraulic steering actuator (11) and a hydro-mechanical steering unit (6) for actuating the hydraulic steering actuator in response to a steering demand from a steering wheel (2) connected to the hydro-mechanical steering unit by a steering shaft (3). An electric motor (5) is operative to apply a torque to the steering shaft and is controlled to provide a haptic steering torque feedback to a user through the steering wheel. The motor (5) is controlled to provide a haptic steering torque feedback that follows a predetermined profile compensating for the effects of a spring in the hydro-mechanical steering unit which opposes movement of the steering member. The motor (5) may be controlled to provide haptic steering torque feedback during a dead band range of movement of the steering member (2) before the hydro-mechanical steering unit begins supplying fluid to the steering actuator.[French]
L'invention concerne un système de direction électro-hydraulique (1) comprenant un actionneur de direction hydraulique (11) et une unité de direction hydromécanique (6) servant à actionner l'actionneur de direction hydraulique en réponse à une demande de direction provenant d'un volant de direction (2) en prise avec l'unité de direction hydromécanique par un arbre de direction (3). Un moteur électrique (5) sert à appliquer un couple à l'arbre de direction et est commandé pour fournir une rétroaction de couple de direction haptique à un utilisateur par l'intermédiaire du volant de direction. Le moteur (5) est commandé pour fournir une rétroaction de couple de direction haptique qui suit un profil prédéfini compensant les effets d'un ressort dans l'unité de direction hydromécanique qui s'oppose au mouvement de l'élément de direction. Le moteur (5) peut être commandé pour fournir une rétroaction de couple de direction haptique pendant une plage de zone morte de mouvement de l'élément de direction (2) avant que l'unité de direction hydromécanique ne commence à fournir un fluide à l'actionneur de direction.