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Title:
TIRE GROUNDING STATE ESTIMATING DEVICE
Document Type and Number:
Japanese Patent JP2012056364
Kind Code:
A
Abstract:

To provide a tire grounding state estimating device that can suppress an error included in measuring tire force and estimate a tire grounding state with high accuracy.

The tire grounding state estimating device 30 includes: an road surface μ model 31 (tire grounding state estimating unit); a vehicle traveling state detector 32 (turning angle detecting unit, and vehicle speed detecting unit); a lateral direction motion model 33 (lateral direction vehicle condition estimation unit); a tire SAT model 34 (tire force estimation unit); a SAT measuring instrument 35 (tire force measurement unit); a comparator 37; and an observer gain 38 (correction signal operation unit). The observer gain 38 returns to the road surface μ model 31, a correction signal calculated from an estimation SAT estimated by the tire SAT model 34 based on a turning angle, estimated road surface μ, estimated yaw rate and an estimated vehicle body slippage angle, and the measurement SAT measured by the SAT measuring instrument 35.


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Inventors:
MATSUDA TAKURO
JO SHINICHIRO
DEGUCHI YOSHITAKA
Application Number:
JP2010199291A
Publication Date:
March 22, 2012
Filing Date:
September 06, 2010
Export Citation:
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Assignee:
NISSAN MOTOR
International Classes:
B60W40/068; B60C19/00; B60W40/10; B60W40/103; B60W40/107; B62D5/04
Domestic Patent References:
JPH09142280A1997-06-03
JP2008114663A2008-05-22
JP2000025599A2000-01-25
JP2000085558A2000-03-28
JP4213994B22009-01-28
JP2009126388A2009-06-11
JP2010076739A2010-04-08
JP2009241721A2009-10-22
JP2009262923A2009-11-12
JPH10324260A1998-12-08
JP2008024196A2008-02-07
JP2008049725A2008-03-06
Attorney, Agent or Firm:
Tamio Nishiwaki



 
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