Title:
操舵装置
Document Type and Number:
Japanese Patent JP7428111
Kind Code:
B2
Abstract:
To enhance stability of handle return control, by preventing the control from being affected by variation of a flow rate of a pump.SOLUTION: A steering device 100 comprises: a first transmission mechanism (a manual operation mechanism 210) that transmits a rotation of an input shaft (a shaft member 212) connected to a steering member 211 to an output shaft (a pinion shaft 231); a second transmission mechanism (a steering mechanism 230) that transmits a rotation of the output shaft to a steering wheel 220; an electric motor 110 that applies first assist force to the first transmission mechanism; a hydraulic mechanism 240 that applies power of an oil pump 243 as second assist force to the second transmission mechanism; and a motor control part 100 that controls the electric motor 110. The motor control part estimates hydraulic return torque generated by hydraulic pressure, on the basis of flow rate information concerning a flow rate of the oil pump and a steering angular speed of the steering member and estimates return torque on the basis of a vehicle speed of a vehicle and a steering angle of the steering member, and further controls the electric motor on the basis of a difference between the return torque and the hydraulic return torque.SELECTED DRAWING: Figure 3
Inventors:
Kazuyuki Nakagawa
Application Number:
JP2020175707A
Publication Date:
February 06, 2024
Filing Date:
October 20, 2020
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
B62D6/00; B62D5/04; B62D5/07
Domestic Patent References:
| JP2006213094A | ||||
| JP2008174194A | ||||
| JP201310380A | ||||
| JP202045004A | ||||
| JP2017124762A | ||||
| JP1233169A | ||||
| JP201914382A | ||||
| JP424169A | ||||
| JP200188730A | ||||
| JP2010280255A | ||||
| JP2014097423A1 |
Foreign References:
| US20190308661 | ||||
| CN109318982A |
Attorney, Agent or Firm:
Hiromori Arai