US 12,304,557 B2
Steering computing device
Shunsuke Tsujii, Okazaki (JP); Yufeng Lin, Iwata (JP); Hidenori Itamoto, Tajimi (JP); and Terutaka Tamaizumi, Okazaki (JP)
Assigned to JTEKT CORPORATION, Kariya (JP)
Filed by JTEKT CORPORATION, Kariya (JP)
Filed on Jul. 25, 2023, as Appl. No. 18/358,076.
Claims priority of application No. 2022-118732 (JP), filed on Jul. 26, 2022.
Prior Publication US 2024/0034406 A1, Feb. 1, 2024
Int. Cl. B62D 5/04 (2006.01); B62D 15/02 (2006.01)
CPC B62D 15/024 (2013.01) [B62D 5/0457 (2013.01); B62D 15/0225 (2013.01); B62D 15/0235 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A steering computing device for calculating state quantity of a steering apparatus, the steering apparatus including a steering wheel, an input shaft, an intermediate shaft, an output shaft, a first Cardan joint, a second Cardan joint, and steered wheels, the input shaft being connected to the steering wheel, the first Cardan joint being a member connecting the input shaft to the intermediate shaft, the second Cardan joint being a member connecting the intermediate shaft to the output shaft, the steered wheels being configured to receive a steering torque input into the steering wheel, via the input shaft, the intermediate shaft, and the output shaft, the steering computing device comprising a processor configured to execute a steering angle variable acquisition process, an output shaft angle variable acquisition process, and a joint angle variable calculation process, wherein:
the steering angle variable acquisition process is a process of acquiring a value of a steering angle variable as a variable indicative of a rotation angle of the steering wheel;
the output shaft angle variable acquisition process is a process of acquiring a value of an output shaft angle variable as a variable indicative of a rotation angle of the output shaft;
the joint angle variable calculation process is a process of calculating a value of a joint angle variable with use of the value of the steering angle variable and the value of the output shaft angle variable as inputs; and
the joint angle variable is a variable defining an angle formed between an axial direction of the input shaft and an axial direction of the output shaft.