Suspension control apparatus of vehicle

A suspension control apparatus for a vehicle comprising:

• 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.

A suspension control method for a vehicle comprising:

• 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;
• determining a suspension control value based on said road surface profile;
• and
• changing the suspension control value to a value suitable for a rough road section before the vehicle has entered the rough road section.

A suspension control method for a vehicle comprising:

• 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.