Rolling motion stability control apparatus for a vehicle

• US 20060241828A1
• Filed: 07/28/2005
• Published: 10/26/2006
• Est. Priority Date: 04/21/2005
• Status: Active Grant

• Current Assignee: Advics Company Limited (Aisin Corp.)
• Original Assignee: Advics Company Limited (Aisin Corp.)
• Inventors: Yasui, Yoshiyuki, Kato, Toshihisa, Matsuoka, Hiroshi, Nagaya, Junya
• Granted Patent: US 7,643,926 B2
• Time in Patent Office: Days
• US Class Current: 701/28
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 8/17554 specially adapted for enhancing stability around the vehicles longitudinal axle, i.e. roll-over prevention road vehicle drive control systems for roll-over prevention otherwise than by controlling a particular sub-unit B60W30/04
• CPC Class Codes: G05D 1/0891 specially adapted for land vehicles

Abstract

A rolling motion stability control apparatus restrains a roll increasing tendency of a vehicle, with each wheel of the vehicle being braked by a wheel brake device. A first braking force control device is provided for applying a first braking force to the wheel, when the vehicle is turned to one direction. A second braking force control device is provided for applying a second braking force to the wheel, when the vehicle is turned to the other direction. References for starting controls of the first and second braking force control devices are set to be of predetermined values, respectively. The reference for starting the control of the second braking force control device is modified to be smaller than a predetermined value, when the vehicle is turned to the one direction.

Claims

1. A rolling motion stability control apparatus for restraining a roll increasing tendency of a vehicle to stabilize a rolling motion thereof, comprising:

wheel brake means for applying braking force to each wheel of said vehicle;

turning direction determination means for determining a turning direction of said vehicle;

first braking force control means for applying a first braking force to said wheel through said wheel brake means, when said turning direction determination means determines that said vehicle is turned to one direction of said vehicle;

second braking force control means for applying a second braking force to said wheel through said wheel brake means, when said turning direction determination means determines that said vehicle is turned to the other direction of said vehicle; and

reference setting means for setting references for starting controls of said first braking force control means and said second braking force control means into the references of predetermined values, respectively, and modifying the reference for starting the control of said second braking force control means to be smaller than the predetermined value, when said turning direction determination means determines that said vehicle is turned to the one direction of said vehicle.

2. A rolling motion stability control apparatus as set forth in claim 1, wherein said turning direction determination means determines the turning direction of said vehicle on the basis of at least one of lateral acceleration, yaw velocity and steering angle of said vehicle.

3. A rolling motion stability control apparatus for restraining a roll increasing tendency of a vehicle to stabilize a rolling motion thereof, comprising:

wheel brake means for applying braking force to each wheel of said vehicle;

turning direction determination means for determining a turning direction of said vehicle;

first braking force control means for applying a first braking force to said wheel through said wheel brake means, when said turning direction determination means determines that said vehicle is turned to one direction of said vehicle;

second braking force control means for applying a second braking force to said wheel through said wheel brake means, when said turning direction determination means determines that said vehicle is turned to the other direction of said vehicle;

state variable acquiring means for acquiring a state variable indicative of a rolling motion of said vehicle; and

reference setting means for setting references for starting controls of said first braking force control means and said second braking force control means, respectively, wherein said reference setting means sets the roll state variable acquired by said state variable acquiring means when the roll state variable exceeds the reference for starting the control of said first braking force control means, to be the reference for starting the control of said second braking force control means, in the case where said turning direction determination means determines that said vehicle is turned to the one direction of said vehicle.

4. A rolling motion stability control apparatus as set forth in claim 3, wherein said turning direction determination means determines the turning direction of said vehicle on the basis of at least one of lateral acceleration, yaw velocity and steering angle of said vehicle.