Electronic controlled fluid suspension system with an advance control and a feedback control of a vehicle attitude
First Claim
1. An electronic controlled fluid suspension system for a vehicle comprising:
- a plurality of fluid actuators, one corresponding to each wheel of the vehicle;
a driving state detection means for detecting driving parameters of the vehicle;
an advance control means responsive to the detected driving parameters for anticipating a change in an attitude of the vehicle caused by a change in direction or velocity of the vehicle and for generating an advance control amount to alleviate the anticipated change in the attitude of the vehicle;
a feedback control means responsive to the detected driving parameters for measuring the change in attitude of the vehicle and generating a feedback control amount in order to alleviate the measured change in the attitude of the vehicle;
a share determination means responsive to the detected driving parameters for determining shares of the advance control amount and the feedback control amount;
a control amount generating means for generating a final control amount from the advance control amount and the feedback control amount according to the determined shares; and
a fluid flow control means responsive to the final control amount for controlling fluid flow from and into the fluid actuators.
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Accused Products
Abstract
An electronic controlled fluid suspension system in which a change in a vehicle attitude is expected in advance by an advance control means responsive to a driving state detected by a driving state detection means, and the current vehicle attitude is feedback-controlled by a feedback control means. The shares of the advance control amount and the feedback control amount are calculated by a share determination means so that final control amount is determined based on the shares. Fluid flow to and from the fluid suspension is controlled by a fluid flow control means in response to the final control amount. In such control system, the advance control and the feedback control are smoothly switched, which results in improved maneuverability and stability of the vehicle.
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Citations
8 Claims
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1. An electronic controlled fluid suspension system for a vehicle comprising:
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a plurality of fluid actuators, one corresponding to each wheel of the vehicle; a driving state detection means for detecting driving parameters of the vehicle; an advance control means responsive to the detected driving parameters for anticipating a change in an attitude of the vehicle caused by a change in direction or velocity of the vehicle and for generating an advance control amount to alleviate the anticipated change in the attitude of the vehicle; a feedback control means responsive to the detected driving parameters for measuring the change in attitude of the vehicle and generating a feedback control amount in order to alleviate the measured change in the attitude of the vehicle; a share determination means responsive to the detected driving parameters for determining shares of the advance control amount and the feedback control amount; a control amount generating means for generating a final control amount from the advance control amount and the feedback control amount according to the determined shares; and a fluid flow control means responsive to the final control amount for controlling fluid flow from and into the fluid actuators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification