Anti-slip control device for drive wheels of automotive vehicle

An anti-slip control device for a drive wheel of a motor vehicle, comprising:

• vehicle-speed detecting means for detecting a running speed of the vehicle;
• drive-wheel speed detecting means for detecting a rotating speed of the drive wheel;
• target-speed determining means for determining a target speed of the drive wheel in an uphill road mode and a flat road mode based on said running speed of the vehicle and said rotating speed of the drive wheel which are detected by said vehicle-speed detecting means and said drive-wheel speed detecting means, respectively;
• anti-slip control means for lowering the rotating speed of the drive wheel such that said rotating speed substantially coincides with the determined target speed of the drive wheel;
• uphill-road determining means for determining whether the vehicle is on an uphill road;
• low-speed detecting means for detecting that the running speed of the vehicle detected by said vehicle-speed detecting means is lower than a first threshold value;
• and
• said target speed determining means determining said target speed in an uphill-road mode when said uphill-road determining means determines that the vehicle is on an uphill road, and when said low-speed detecting means detects that the detected running speed of the vehicle is lower than said first threshold value, said target speed determined in the uphill road mode being less than said target speed determined in the flat road mode.