VEHICLE ATTITUDE CONTROLLER
First Claim
1. A vehicle attitude controller for controlling an attitude of a vehicle body of a vehicle, comprising:
- control means for improving a roll feeling;
control means for improving stability; and
vehicle-motion determining means, wherein;
the control means for improving the roll feeling includes;
target pitch-rate calculating means for calculating a target pitch rate corresponding to a target value of a pitch rate of the vehicle body so that the pitch rate increases in accordance with a magnitude of a roll rate of the vehicle body; and
pitch-moment generating means for generating a pitch moment for the vehicle body so that the pitch rate of the vehicle body becomes closer to the target pitch rate;
the control means for improving the stability includes roll suppression means for generating a force for suppressing roll; and
the vehicle-motion determining means is configured to switch a control rate between the control means for improving the roll feeling and the control means for improving the stability in accordance with a vehicle motion.
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Accused Products
Abstract
A vehicle attitude controller capable of improving turning operability, steering stability, and ride quality of a vehicle. In a normal-operation region, a pitch control unit for calculating a target pitch rate in accordance with a roll rate performs control in priority to a roll suppression section. In this case, a target damping force calculated in the pitch control unit is weighed to control a damping-force characteristic of the dampers so that a pitch rate becomes equal to the target pitch rate. In a critical region in which a road-surface gripping state of the vehicle tires is bad, the roll suppression section performs control in priority to the pitch control unit so as to weigh a target damping force calculated in the roll suppression section. As a result, the damping-force characteristic of the dampers is controlled so as to increase the amount of roll suppression control.
83 Citations
15 Claims
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1. A vehicle attitude controller for controlling an attitude of a vehicle body of a vehicle, comprising:
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control means for improving a roll feeling; control means for improving stability; and vehicle-motion determining means, wherein; the control means for improving the roll feeling includes; target pitch-rate calculating means for calculating a target pitch rate corresponding to a target value of a pitch rate of the vehicle body so that the pitch rate increases in accordance with a magnitude of a roll rate of the vehicle body; and pitch-moment generating means for generating a pitch moment for the vehicle body so that the pitch rate of the vehicle body becomes closer to the target pitch rate; the control means for improving the stability includes roll suppression means for generating a force for suppressing roll; and the vehicle-motion determining means is configured to switch a control rate between the control means for improving the roll feeling and the control means for improving the stability in accordance with a vehicle motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification