Suspension controller for vehicle
First Claim
1. A suspension system for a vehicle including a plurality of suspension units which bear the load of the vehicle and which can be contracted and extended in order to adjust the attitude of the vehicle, said system comprising:
- a first detecting means for detecting and outputting at least one driving parameter of actual driving conditions of the vehicle which influence the attitude of the vehicle;
a second detecting means for detecting and outputting positions of said suspension units;
a calculating means for determining, based on said at least one driving parameter of actual driving conditions output from said first detecting means, a predicted attitude of the vehicle at a predetermined time period following a time during which said at least one driving parameter of actual driving conditions was detected, and for outputting a predicted attitude data set in accordance with said predicted attitude;
a data memory means for storing a plurality of predicted attitude data sets and a plurality of control data sets respectively corresponding to each of said plurality of predicted attitude data sets and having information for the control of the positions of the suspension units;
a storing and control means for storing and utilizing one control data set to control the suspension units in such a manner that the positions of the suspension units detected by said second detecting means are brought into conformity with the positions indicated by said one control data set;
rewriting means for selecting a control data set from said data memory means based on said predicted attitude data set outputted by said calculating means and for replacing a previously selected control data set previously stored in said storing and control means with the selected control data set selected by said rewriting means;
wherein the control of said suspension units is effected by said control means after rewriting of said selected control data set has been completed.
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Accused Products
Abstract
A suspension controller for a vehicle which includes a plurality of suspension units containing a hydraulic fluid and which is designed to bear a part or the whole of the load of the vehicle body by utilizing the pressure of the hydraulic fluid and to expand or contract the suspension units by adjusting the amount of hydraulic fluid contained in the suspension units, thereby adjusting the attitude of the vehicle body. An anticipated change in the attitude of the vehicle is estimated from present running conditions of the vehicle, and control of each of the suspension units is started immediately thereafter so as to suppress the change in attitude or change the attitude of the vehicle as desired. Accordingly, it is possible to effectively control the attitude of the vehicle during cornering or at the time of moving the vehicle forward rapidly from start or when the brakes are applied suddenly. Thus, the driving performance is improved by a large margin, and the occupant of the vehicle can be assured of enjoying a comfortable ride.
115 Citations
7 Claims
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1. A suspension system for a vehicle including a plurality of suspension units which bear the load of the vehicle and which can be contracted and extended in order to adjust the attitude of the vehicle, said system comprising:
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a first detecting means for detecting and outputting at least one driving parameter of actual driving conditions of the vehicle which influence the attitude of the vehicle; a second detecting means for detecting and outputting positions of said suspension units; a calculating means for determining, based on said at least one driving parameter of actual driving conditions output from said first detecting means, a predicted attitude of the vehicle at a predetermined time period following a time during which said at least one driving parameter of actual driving conditions was detected, and for outputting a predicted attitude data set in accordance with said predicted attitude; a data memory means for storing a plurality of predicted attitude data sets and a plurality of control data sets respectively corresponding to each of said plurality of predicted attitude data sets and having information for the control of the positions of the suspension units; a storing and control means for storing and utilizing one control data set to control the suspension units in such a manner that the positions of the suspension units detected by said second detecting means are brought into conformity with the positions indicated by said one control data set; rewriting means for selecting a control data set from said data memory means based on said predicted attitude data set outputted by said calculating means and for replacing a previously selected control data set previously stored in said storing and control means with the selected control data set selected by said rewriting means; wherein the control of said suspension units is effected by said control means after rewriting of said selected control data set has been completed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification