US 12,441,396 B2
Steering control device
Isao Namikawa, Okazaki (JP); Satoshi Matsuda, Okazaki (JP); Tomoyuki Iida, Nisshin (JP); Masaharu Yamashita, Toyota (JP); and Kenji Shibata, Nagoya (JP)
Assigned to JTEKT CORPORATION, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by JTEKT CORPORATION, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 9, 2021, as Appl. No. 17/546,110.
Claims priority of application No. 2020-207050 (JP), filed on Dec. 14, 2020.
Prior Publication US 2022/0185367 A1, Jun. 16, 2022
Int. Cl. B62K 25/30 (2006.01); B62D 5/00 (2006.01); B62D 5/04 (2006.01); B62D 6/00 (2006.01); B62K 3/02 (2006.01); B62K 25/04 (2006.01)
CPC B62D 6/00 (2013.01) [B62D 5/006 (2013.01); B62D 5/0463 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A steering control device comprising:
a reaction force controller that is configured to control a reaction force motor based on a command value calculated according to a steering condition, the reaction force motor being a source of a steering reaction force applied to a steering wheel that is separated in power transmission from a turning shaft; and
a turning controller, separate from the reaction force controller, that is configured to control a turning motor that is a source of a turning force applied to the turning shaft according to a steering condition, wherein
the reaction force controller includes:
a first calculator configured to calculate a first axial force acting on the turning shaft based on a current value of the turning motor;
a second calculator configured to calculate a second axial force acting on the turning shaft based on a vehicle state variable different from the current value of the turning motor; and
a third calculator configured to calculate a third axial force that is a final axial force to be reflected in the command value based on the first axial force and the second axial force,
the turning controller is configured to, when a specific situation occurs in which a current of the turning motor has to be limited, set a code, from a plurality of predefined codes stored in a storage device, in accordance with a degree of the specific situation and transmit the code to the reaction force controller through an in-vehicle network, and
the reaction force controller is configured to, when the specific situation occurs, decrease a reflection degree of the first axial force in the third axial force and increase a reflection degree of the second axial force in the third axial force according to the code from the turning controller.