Method for controlling anti-roll/anti-yaw of vehicles

• US 7,083,172 B2
• Filed: 08/18/2003
• Issued: 08/01/2006
• Est. Priority Date: 08/20/2002
• Status: Active Grant

• Current Assignee: Mando Corporation
• Original Assignee: Mando Corporation
• Inventors: Kou, Youseok
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): Spisich, George D.
• Application Number:
  US10/642,294
• Publication Number:
  US 20040038599A1
• Time in Patent Office: 1,079 Days
• Field of Search: 280/5.507, 280/5.503, 280/5.508, 280/5.51, 280/5.512, 280/5.515, 280/5.519, 701/37, 701/38
• US Class Current: 280/5.507
• CPC Class Codes: B60G 17/0162 mainly during a motion involving steering operation, e.g. cornering, overtaking B60G17/0164 takes precedence
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 17/06 Characteristics of dampers , e.g. mechanical dampersB60G17/015 takes precedence
• CPC Class Codes: B60G 2400/0521 Roll rate
• CPC Class Codes: B60G 2400/0523 Yaw rate
• CPC Class Codes: B60G 2400/104 lateral or transversal with regard to vehicle
• CPC Class Codes: B60G 2400/204 Vehicle speed
• CPC Class Codes: B60G 2400/208 of wheel rotation
• CPC Class Codes: B60G 2400/41 Steering angle
• CPC Class Codes: B60G 2500/10 Damping action or damper
• CPC Class Codes: B60G 2800/85 System Prioritisation

Abstract

A method for controlling roll/yaw motions of a vehicle includes the steps of deciding whether an anti-roll control is required or not by comparing a roll rate of the vehicle with a predetermined threshold roll rate, executing the anti-roll control if the roll rate is larger than the predetermined threshold roll rate, deciding whether an anti-yaw control is required or not by comparing a difference between an actual yaw rate of a vehicle and a desired yaw rate with a predetermined threshold yaw rate and executing the anti-yaw control if the difference between the actual yaw rate and the desired yaw rate is larger than the predetermined threshold yaw rate. During the anti-roll control, both right and left front wheel dampers and both right and left rear wheel dampers are hard-controlled at the same time. Further, during the anti-yaw control, both right and left front wheel dampers are hard-controlled and both right and left rear wheel dampers are soft-controlled.

Claims

1. A method for providing anti-roll and an anti-yaw controls of a vehicle by controlling front and rear wheel dampers of the vehicle, said front and rear wheel dampers including left and right front wheel dampers, and left and right rear wheel dampers, and said method comprising the steps of:

deciding whether an anti-roll control is required by comparing a roll rate of the vehicle with a predetermined threshold roll rate;

executing the anti-roll control if the roll rate is larger than the predetermined threshold roll rate;

after deciding that an anti-roll control is required and executing the anti-roll control, deciding whether an anti-yaw control is required by comparing a difference between an actual yaw rate of the vehicle and a desired yaw rate with a predetermined threshold yaw rate; and

executing the anti-yaw control if the difference between the actual yaw rate and the desired yaw rate is larger than the predetermined threshold yaw rate.

2. The method of claim 1, wherein the anti-roll control is performed by hard-controlling simultaneously both said right front wheel damper and said left front wheel damper and both said right rear wheel damper and said left rear wheel damper of the vehicle.

3. The method of claim 1, wherein the anti-roll control is performed by hard-controlling both said right front wheel damper and said left front wheel damper of the vehicle and by soft-controlling both said right rear wheel damper and said left rear wheel damper of the vehicle.