Electronically-controlled suspension apparatus and damping force control method
First Claim
1. An electronically-controlled suspension apparatus, which is provided with a damper installed between a vehicle body and a wheel axle, comprising:
- a stroke detecting unit for detecting a relative displacement of the vehicle body with respect to the wheel axle;
a stroke response control unit, which determines a control command adjusted value for increasing an extension or compression damping force of the damper when the relative displacement is equal to or greater than a first predetermined value, or is less than or equal to a second predetermined value; and
an actuating unit which is operated according to the control command adjusted value, thus adjusting the extension or compression damping force of the damper.
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Accused Products
Abstract
An electronically-controlled suspension apparatus includes a stroke detecting unit for detecting a relative displacement of the vehicle body with respect to the wheel axle; a stroke response control unit for determining a control command adjusted valve; and an actuating unit which is operated according to the control command adjusted value, thus adjusting the extension or compression damping force of the damper. The stroke response control unit determines the control command adjusted value for increasing an extension or compression damping force of the damper when the relative displacement is equal to or greater than a first predetermined value, or is less than or equal to a second predetermined value.
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Citations
13 Claims
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1. An electronically-controlled suspension apparatus, which is provided with a damper installed between a vehicle body and a wheel axle, comprising:
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a stroke detecting unit for detecting a relative displacement of the vehicle body with respect to the wheel axle;
a stroke response control unit, which determines a control command adjusted value for increasing an extension or compression damping force of the damper when the relative displacement is equal to or greater than a first predetermined value, or is less than or equal to a second predetermined value; and
an actuating unit which is operated according to the control command adjusted value, thus adjusting the extension or compression damping force of the damper. - View Dependent Claims (2, 3, 4)
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5. A damping force control method of an electronically-controlled suspension apparatus which determines a control command value for controlling a damping force of a damper by using a piece of information about a driving state of a vehicle, road surface characteristics or intention of a driver, detected by sensing means, the damper being installed between a vehicle body and a wheel axle, the method comprising:
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detecting a relative displacement of the vehicle body with respect to the wheel axle;
determining whether the relative displacement is equal to or greater than a first predetermined value, or is less than or equal to a second predetermined value;
determining a first control command adjusted value for increasing an extension damping force of the damper by adjusting the control command value when the relative displacement is equal to or greater than the first predetermined value;
determining a second control command adjusted value for increasing a compression damping force of the damper by adjusting the control command value when the relative displacement is less than or equal to the second predetermined value; and
adjusting the damping force of the damper according to the first or second control command adjusted value. - View Dependent Claims (6)
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7. A damping force control method of an electronically-controlled suspension apparatus which determines a control command value for controlling a damping force of a damper by using a piece of information about a driving state of a vehicle, road surface characteristics or intention of a driver, detected by sensing means, the damper being installed between a vehicle body and a wheel axle, the method comprising:
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obtaining a relative displacement of the vehicle body with respect to the wheel axle, and a relative velocity;
determining whether the relative displacement is equal to or greater than a first predetermined value, or is less than or equal to a second predetermined value, and whether or not the relative velocity is greater than 0;
determining a control command adjusted value by adjusting the control command value according to the relative displacement and the relative velocity, thus increasing or reducing an extension or an compression damping force of the damper; and
adjusting the damping force of the damper according to the control command adjusted value. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification