Four-wheel steering system for vehicle

专利名称：Four-wheel steering system for vehicle发明人：Kumabe, Shigehumi, c/o Mazda Motor

Corporation,Hosoda, Koji, c/o Mazda MotorCorporation

申请号：EP93119899.8申请日：19931209公开号：EP0601588A1公开日：19940615

专利附图：

摘要：In a four-wheel steering system for a vehicle a target value for controllingturning of the rear wheels (3,4) in response to turning of the front wheels (1,2) is

determined by adding and subtracting a plurality of correction terms which are

determined on the basis of running state values (ΘF,Ψ',Θ'F2) other than the vehicle speed(V) to and from a base term (G₄·f₄(V)) which is determined according to the vehicle speed(V). The base term is set according to the vehicle speed so that the rear wheels (3,4) areturned in the reverse phase in a low vehicle speed range and in the same phase in a highvehicle speed range, and each of the correction terms is a product of a function of thecorresponding running state value (ΘF,Ψ',Θ'F2) and a control gain (f₁(V),f₂(V),f₃(V))determined according to the vehicle speed. The base term (G₄·f₄(V)) and the control gains(f₁(V),f₂(V),f₃(V)) of at least one of the correction terms are fixed to respectivepredetermined values and the target value (TGΘS1) is determined on the basis of thebase term and the correction terms thus obtained when it is determined that the vehicleis making a sharp deceleration.

申请人：Mazda Motor Corporation

地址：No. 3-1, Shinchi Fuchu-cho Aki-gun Hiroshima-ken JP

国籍：JP

代理机构：Müller-Boré & Partner Patentanwälte

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