Suspension control system with variable steering characteristics
First Claim
1. A suspension control system, comprising:
- front suspension systems disposed between a front portion of a vehicular body and front wheels thereof for damping relative displacement therebetween, each of said front suspension systems having damping characteristics variable according to a front suspension control command;
rear suspension systems disposed between a rear portion of the vehicular body and rear wheels thereof for damping relative displacement therebetween, each of said rear suspension systems having damping characteristics variable according to a rear suspension command;
lateral acceleration monitoring means for monitoring lateral acceleration at a first position on the vehicular body for producing a first lateral acceleration indicative signal and monitoring lateral acceleration at a second position longitudinally off-set from said first position, for producing a second lateral acceleration indicative signal; and
a control unit receiving said first and second lateral acceleration indicative signals for deriving said front suspension control command on the basis of said first lateral acceleration indicative signal and deriving said rear suspension control command on the basis of said second lateral acceleration indicative signal, for suppressing vehicular rolling motion.
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Accused Products
Abstract
A suspension control system employs a first lateral acceleration sensor for monitoring a lateral acceleration at a first point on a vehicular body and a second lateral acceleration sensor for monitoring lateral acceleration at a second point on the vehicular body, which second point is provided at a longitudinally offset position from the first point. A controller derives a lateral shifting of vehicular load at the front suspension systems on the basis of a first lateral acceleration monitored by the first lateral acceleration sensor, and a lateral shifting of the vehicular load at a rear suspension system on the basis of a second lateral acceleration monitored by the second lateral acceleration sensor. Control for front and rear suspension systems is performed independently on the basis of the lateral load shifting at the front and rear suspension systems.
31 Citations
18 Claims
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1. A suspension control system, comprising:
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front suspension systems disposed between a front portion of a vehicular body and front wheels thereof for damping relative displacement therebetween, each of said front suspension systems having damping characteristics variable according to a front suspension control command; rear suspension systems disposed between a rear portion of the vehicular body and rear wheels thereof for damping relative displacement therebetween, each of said rear suspension systems having damping characteristics variable according to a rear suspension command; lateral acceleration monitoring means for monitoring lateral acceleration at a first position on the vehicular body for producing a first lateral acceleration indicative signal and monitoring lateral acceleration at a second position longitudinally off-set from said first position, for producing a second lateral acceleration indicative signal; and a control unit receiving said first and second lateral acceleration indicative signals for deriving said front suspension control command on the basis of said first lateral acceleration indicative signal and deriving said rear suspension control command on the basis of said second lateral acceleration indicative signal, for suppressing vehicular rolling motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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9. A suspension control system, comprising:
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front suspension systems disposed between a front portion of a vehicular body and respective front wheels thereof for damping relative displacement therebetween, each of said front suspension systems having damping characteristics variable according to a front suspension control command; rear suspension systems disposed between a rear portion of the vehicular body and respective rear wheels thereof for damping relative displacement therebetween, each of said rear suspension systems having damping characteristics variable according to a rear suspension command; lateral acceleration monitoring means for monitoring a lateral acceleration at a first position on the vehicular body for producing a first lateral acceleration indicative signal and monitoring a lateral acceleration at a second position on the vehicular body for producing a second lateral acceleration indicative signal, the levels of the lateral acceleration sensors at said first and second positions being differentiated with respect to each other so that the magnitude of lateral acceleration at said second position is greater than that at said first position at least when the vehicular body enters a curve; and a control unit responsive to said first and second lateral acceleration indicative signals for deriving said front suspension control command on the basis of said first lateral acceleration indicative signal and deriving said rear suspension control command on the basis of said second lateral acceleration indicative signal, for suppressing vehicular rolling motion.
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Specification