Dynamic behavior control apparatus of automotive vehicle

A dynamic behavior control apparatus of an automotive vehicle comprising:

• a behavior control device for stabilizing unstable behavior of the vehicle;
• first detection means for detecting a side slip angle of the vehicle;
• second detection means for detecting a side slip angular velocity of the vehicle;
• third detection means for detecting a driving condition amount related to stability of the vehicle in a lateral direction;
• and
• electric control means for controlling operation of the behavior control device when a dynamic state of the vehicle defined by the detected side slip angle and the detected angular velocity is in an unstable region,
• wherein said electric control means comprises:
• means for varying the unstable region in accordance with the detected driving condition amount;
• calculation means for calculating an unstable degree within the unstable region of the dynamic state of the vehicle;
• determination means for determining a control amount which is increased proportionally with an increase of the unstable degree;
• and
• output means for producing an electric control signal indicative of the control amount and applying it to said electric control means.

A dynamic behavior control apparatus of an automotive vehicle comprising:

• a behavior control device for stabilizing unstable behavior of the vehicle;
• first detection means for detecting a side slip angle of the vehicle;
• second detection means for detecting a side slip angular velocity of the vehicle;
• third detection means for detecting a travel circumstance condition amount related to stability of the vehicle in a lateral direction;
• and
• electric control means for controlling operation of the behavior control device when a dynamic state of the vehicle defined by the detected side slip angle and the detected angular velocity is in an unstable region,
• wherein said electric control means comprises:
• means for varying the unstable region in accordance with the detected travel circumstance condition amount;
• calculation means for calculating an unstable degree within the unstable region of the dynamic state of the vehicle;
• determination means for determining a control amount which is increased proportionally with an increase of the unstable degree;
• and
• output means for producing an electric control signal indicative of the control amount and applying it to said electric control means.