US 12,214,831 B2
Turning control device
Takashi Koudai, Okazaki (JP); Yuji Fujita, Okazaki (JP); Yugo Nagashima, Anjo (JP); Kazuma Hasegawa, Anjo (JP); Yuuta Kajisawa, Okazaki (JP); Masaharu Yamashita, Toyota (JP); Yosuke Yamashita, Nagoya (JP); Kazuaki Iida, Toyota (JP); and Shintaro Takayama, Toyota (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 Jan. 24, 2023, as Appl. No. 18/158,591.
Claims priority of application No. 2022-012044 (JP), filed on Jan. 28, 2022.
Prior Publication US 2023/0303159 A1, Sep. 28, 2023
Int. Cl. B62D 5/04 (2006.01)
CPC B62D 5/0481 (2013.01) [B62D 5/0457 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A turning control device that controls a turning device, the turning device turning a turning wheel of a vehicle, the turning control device comprising a precursor detection circuit configured to detect a precursor of an abnormality by which a smooth operation of the turning device is impaired, wherein:
the precursor detection circuit is configured to start measurement of a total running time of the vehicle when the precursor is detected, and is configured to execute a process of reporting the precursor, based on the measured total running time; and
the precursor detection circuit is configured to perform the measurement of the total running time regardless of whether the precursor is detected again, when a vehicle electric power source is switched off and then is switched on again after the precursor is detected once, wherein:
the precursor detection circuit is configured to store the total running time when the vehicle electric power source is switched off;
the precursor detection circuit is configured to read the total running time stored at a timing when the vehicle electric power source is switched off, when the vehicle electric power source is switched on again, and is configured to restart the measurement of the total running time, using the read total running time as an initial value, and
the precursor detection circuit is configured to increase the initial value depending on a period during which the vehicle electric power source is in an off-state.