Invention Grant
- Patent Title: Motor driven power steering system and control method thereof
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Application No.: US16805207Application Date: 2020-02-28
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Publication No.: US11608107B2Publication Date: 2023-03-21
- Inventor: Kyu Won Kim , Chung Choo Chung , Yong Woo Jeong , Seung Hi Lee
- Applicant: HYUNDAI MOTOR COMPANY , KIA MOTORS CORPORATION , IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
- Applicant Address: KR Seoul; KR Seoul; KR Seoul
- Assignee: HYUNDAI MOTOR COMPANY,KIA MOTORS CORPORATION,IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
- Current Assignee: HYUNDAI MOTOR COMPANY,KIA MOTORS CORPORATION,IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
- Current Assignee Address: KR Seoul; KR Seoul; KR Seoul
- Agency: Lempia Summerfield Katz LLC
- Priority: KR10-2019-0134889 20191028
- Main IPC: B62D6/00
- IPC: B62D6/00 ; B62D5/04 ; F16H1/16
Abstract:
A motor driven power steering system includes: a power source for generating a steering assistance force assisting the steering of a vehicle; a transfer gear positioned between a power source and a column for transferring the steering assistance force generated by the power source to the column; a parameter estimation unit for estimating a friction parameter of a dynamic friction model based on the actual friction torque actually generated in the transfer gear; and a state estimation unit for calculating a state variable of the dynamic friction model based on a contact surface moving speed of the transfer gear and for estimating expected friction torque according to the dynamic friction model by using the calculated state variable and the friction parameter of the dynamic friction model estimated by the parameter estimation unit.
Public/Granted literature
- US20210122412A1 MOTOR DRIVEN POWER STEERING SYSTEM AND CONTROL METHOD THEREOF Public/Granted day:2021-04-29
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