Suspension control apparatus of vehicle
First Claim
1. A suspension control apparatus for a vehicle comprising:
- a vertical acceleration sensor for detecting a vertical acceleration of a vehicle; and
a control unit for determining a road surface profile by estimating wavelength and amplitude of irregularities of the road surface based on the vertical acceleration of the vehicle detected by said vertical acceleration sensor, and determining a suspension control value based on said road surface profile.
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Accused Products
Abstract
The invention provides a suspension control apparatus for a vehicle which can execute a suspension control suitable even for a rough road by executing the suspension control based on an actual road surface profile, while taking various vehicle states (weight, speed, etc.) into consideration, and learning the road surface profile. The suspension control apparatus has a vertical acceleration sensor for detecting a vertical acceleration of the vehicle, and a control unit for determining a road surface profile by estimating waves and irregularities in the road surface based on the vertical acceleration of the vehicle detected by the vertical acceleration sensor, and determining a suspension control value based on the thus determined road surface profile.
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Citations
17 Claims
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1. A suspension control apparatus for a vehicle comprising:
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a vertical acceleration sensor for detecting a vertical acceleration of a vehicle; and
a control unit for determining a road surface profile by estimating wavelength and amplitude of irregularities of the road surface based on the vertical acceleration of the vehicle detected by said vertical acceleration sensor, and determining a suspension control value based on said road surface profile. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A suspension control apparatus for a vehicle comprising:
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a vertical acceleration sensor for detecting a vertical acceleration of the vehicle;
a vehicle speed sensor for detecting a vehicle speed;
a weight sensor for detecting a vehicle weight; and
a control unit for determining a road surface profile by estimating wavelength and amplitude of irregularities of a road surface based on the vertical acceleration of the vehicle detected by said vertical acceleration sensor, the vehicle speed detected by said vehicle speed sensor and the vehicle weight detected by said weight sensor, and for determining a suspension control value based on said road surface profile. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A suspension control apparatus for a vehicle comprising:
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current position detecting means for detecting a current position of the vehicle;
communication means for receiving a road surface profile of a registered road section from an information providing server; and
a control unit for determining a suspension control value based on the road surface profile received by said communication means.
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16. A suspension control method for a vehicle comprising:
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detecting a vertical acceleration of the vehicle;
determining a road surface profile by estimating wavelength and amplitude of irregularities of a road surface based on the detected acceleration of the vehicle in the vertical direction; and
determining a suspension control value based on said road surface profile.
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17. A suspension control method for a vehicle comprising:
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detecting a vertical acceleration of the vehicle;
detecting the vehicle speed;
detecting the vehicle weight; and
determining a road surface profile by estimating wavelength and amplitude of irregularities of the road surface based on the detected vertical acceleration, the detected vehicle speed and the detected vehicle weight, and determining a suspension control value based on said road surface profile.
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Specification