Honda Motor Co., Ltd.

Thyssenkrupp Presta Ag

Takaya Yamaguchi

Munetsugu Hanji

Yosuke Ojima

Takashi Kuribayashi

Péter Kakas

Hayato Miyakawa

Yoshinobu Watanabe

Miklós Arányi

Laszlo Dombai

Adela Beres

Pèter Kakas

Yuya Tanno

To prevent a driver from feeling uncomfortable when the driver touches a steering member in a state where a driving source is stopped, a vehicle steering system () is provided in a vehicle () that travels by a driving force generated by a driving source (). The vehicle steering system () includes; a steering member () configured to accept a steering operation; and a reaction force actuator () configured to apply a reaction force to the steering member () in response to the steering operation. In a state where the driving source () is stopped, the reaction force actuator () is configured to apply the reaction force to the steering member () based on a stopped time position that is a position of the steering member () at a time when the driving source () is stopped.

Vehicle steering system

A method of controlling a steering system for a vehicle includes determining a state of performance degradation of the steering system, determining a vehicle situation, determining if a performance of the steering system in the determined state of performance degradation is sufficient for the determined vehicle situation, and, if the performance of the steering system is not sufficient, modifying the state of performance degradation by decreasing a degradation level for a period of time.

Power boost during degradation of a steering system

A steer-by-wire steering system for a motor vehicle or a steering system for an autonomous driving motor vehicle includes a controller configured or programmed to control steering of steerable road wheels depending on a driver's input or an input of an autonomous driving unit and to include a normal mode of operation with full steering functionality and no quality problems, and at least two degraded modes with degraded operation of the steering system. The steering system includes an evaluator to evaluate a state of performance degradation of the steering system and to set the operation mode of the controller based on an evaluation result from the evaluator.

Degradation concept for a steer-by-wire steering system

Growing community of inventors

Wako, Japan

Takaya Yamaguchi