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Patent Searching and Data


Title:
SUSPENSION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187223
Kind Code:
A1
Abstract:
The purpose of the present invention is to allow an improvement in the sprung mass speed estimation accuracy by separating the relative displacement caused by a road surface input and the relative displacement caused by a driver's operation of the vehicle. This suspension control device is provided with a control device that controls the damping characteristics of each damping force adjustable shock absorber. The control device is provided with: an external force calculation unit that calculates the total external force acting on a vehicle body from the physical quantities output from a physical quantity extraction unit; an operation force calculation unit that calculates an operation-induced force which is applied to each of the damping force adjustable shock absorbers in accordance with the load movement caused by vehicle operations; and a vehicle behavior extraction means for separating the operation-induced force calculated by the operation force calculation unit from the total external force calculated by the external force calculation unit to determine the external force caused by the road surface input.

Inventors:
KASUYA KENTARO (JP)
ICHIMARU NOBUYUKI (JP)
HIRAO RYUSUKE (JP)
Application Number:
PCT/JP2018/034983
Publication Date:
October 03, 2019
Filing Date:
September 21, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60G17/016; B60G17/015
Foreign References:
JP2015123895A2015-07-06
JP2016203920A2016-12-08
JP2000103218A2000-04-11
JP2017109676A2017-06-22
JPH08200430A1996-08-06
JPH06344743A1994-12-20
JP2008260439A2008-10-30
JP2016107862A2016-06-20
JPH048618A1992-01-13
JP2012136111A2012-07-19
JPH05614A1993-01-08
JP2001001732A2001-01-09
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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