Invention Grant
- Patent Title: Vehicle control device, and vehicle control method
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Application No.: US14386838Application Date: 2013-05-13
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Publication No.: US09643599B2Publication Date: 2017-05-09
- Inventor: Hironobu Kikuchi
- Applicant: Nissan Motor Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: Nissan Motor Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Global IP Counselors, LLP
- Priority: JP2012-110303 20120514; JP2012-110304 20120514
- International Application: PCT/JP2013/063240 WO 20130513
- International Announcement: WO2013/172281 WO 20131121
- Main IPC: B60G17/016
- IPC: B60G17/016 ; B60G17/018 ; B60W30/02 ; B60G17/0195 ; B60G17/06 ; B60W10/06 ; B60W10/184 ; B60W10/22 ; B60T7/12 ; B60G17/0185 ; B60W30/20

Abstract:
A vehicle control device includes a sensor and a controller. The sensor detects wheel speed. The controller estimates sprung mass state based on detected information in a prescribed frequency range. The controller controls a variable-damping force shock absorber to bring the estimated sprung mass state to a target sprung mass state. The controller estimates wheel rim braking/drive torque acting on a wheel. The controller determines the estimation accuracy of the sprung mass state has deteriorated when a rate of change of a stationary component extracted from components of wheel rim braking/drive torque acting on a wheel is detected to equal or exceed a prescribed value. The controller controls the variable-damping force shock absorber to a more limited extent than when the estimation accuracy has not deteriorated.
Public/Granted literature
- US20150046034A1 VEHICLE CONTROL DEVICE, AND VEHICLE CONTROL METHOD Public/Granted day:2015-02-12
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