Abstract The present invention provides a vehicle dynamic control
system which alters characteristics of respective vehicle
movement controllers so that they can function properly against
coming and foreseeable running conditions and current running
conditions, recognizing beforehand details of an emerging curve
on the road to be traveled. The system comprises a vehicle
movement control alterant and at least one among vehicle
movement controllers ,i.e., a brake controller, a left/right
wheel differential limiter controller and power distribution
controller. When the vehicle is approaching the curve, the
vehicle movement control alterant alters characteristics of a
braking controller, the left/right wheel differential limiter
controller and the power distribution controller to those
favorable to turning for driving through a curve appropriately.
When the vehicle is approaching the curve end, the alternate
alters characteristics of the left/right differential
controller to those favorable to stabilizing running so that
the vehicle can pass the curve end and go into straight road
appropriately.
A vehicle control system comprising: a vehicle position detecting means for determining
position of a running vehicle; a curve geometry detecting means for detecting an emerging
curve and calculating curve geometry; at least one vehicle movement controlling means for
controlling movement of said vehicle; and a vehicle movement control altering means for altering a
characteristic of said vehicle movement controlling means to
a characteristic favorable to turning along said emerging curve
in accordance with said calculated curve geometry, said vehicle
not running in the curve and positioning within a pre-determined
distance to the curve.
Claim 2
Dependent Claim
73 words
A vehicle control system according to claim 1, wherein said vehicle movement control altering means
alters a characteristic of said vehicle movement controlling
means to a characteristic favorable to stabilizing vehicle
posture , said vehicle running in the curve and positioning
within a pre-determined distance to the curve end and to another
characteristic favorable to turning, said vehicle running in
the curve and positioning out of a pre-determined distance to
the curve end.
Claim 3
Dependent Claim
88 words
A vehicle control system according to claim 1, wherein said vehicle movement controlling means is at
least one among a brake controller applying braking force to
a wheel selected in a predetermined manner based on vehicle
running conditions, a left/right wheel difference limitation
controller controlling differential limiting force between
left and right wheels and a power distributing controller
controlling differential limiting force applied to a center
differential device between front and rear wheels for
distributing driving force to front and rear wheels based on
the vehicle running conditions.
Claim 4
Dependent Claim
40 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle
movement controlling means to a characteristic favorable to
turning is done by changing control parameters, said vehicle
movement controlling means being said brake controller
Claim 5
Dependent Claim
72 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle
movement controlling means to a characteristic favorable to
turning is done by reducing differential limiting force
between said left and right wheels and altering to another
characteristic favorable to stabilizing running is done by
increasing differential limiting force between said left and
right wheels, said vehicle movement controlling means being
said left/rear wheel differential limitation controller
Claim 6
Dependent Claim
88 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle
movement controlling means to a characteristic favorable to
turning is done by setting differential limiting force for
uneven torque distribution to said front and rear wheels and
altering to another characteristic favorable to stabilizing
running is done by setting differential limiting force for even
torque distribution to said front and rear wheels, said
vehicle movement controlling means being said power
distributing controller controlling differential limiting
force applied to a center differential device.