WHEEL LIFTED AND GROUNDED IDENTIFICATION FOR AN AUTOMOTIVE VEHICLE

• US 20080117035A1
• Filed: 01/27/2008
• Published: 05/22/2008
• Est. Priority Date: 09/25/2000
• Status: Active Grant

• Current Assignee: Jianbo Lu, Joseph Meyers, Michael Brewer, Todd Brown
• Original Assignee: Jianbo Lu, Joseph Meyers, Michael Brewer, Todd Brown
• Inventors: Brown, Todd, Lu, Jianbo, Brewer, Michael, Meyers, Joseph
• Granted Patent: US 7,602,279 B2
• Time in Patent Office: Days
• US Class Current: 340/440
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60T 2210/22 Banked curves
• CPC Class Codes: B60T 2240/06 Wheel load; Wheel lift
• CPC Class Codes: B60T 8/172 Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters B60T8/17551 takes precedence
• CPC Class Codes: B60W 2040/1307 Load distribution on each wheel suspension
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B60W 2520/16 Pitch
• CPC Class Codes: B60W 2520/18 Roll
• CPC Class Codes: B60W 2520/26 Wheel slip
• CPC Class Codes: B60W 30/045 Improving turning performance
• CPC Class Codes: B60W 40/103 Side slip angle of vehicle body
• CPC Class Codes: B60W 40/12 related to parameters of the vehicle itself , e.g. tyre models

Abstract

A control system (18) for an automotive vehicle (10) has a first roll condition detector (64A), a second roll condition detector (64B), a third roll condition detector (64C), and a controller (26) that uses the roll condition generated by the roll condition detectors (64A-C) to determine a wheel lift condition. Other roll condition detectors may also be used in the wheel lift determination. The wheel lift conditions may be active or passive or both.

Claims

1. A method for controlling an automotive vehicle having a plurality of wheels comprising:

determining a first wheel lift condition;

determining a second wheel lift condition;

determining a third wheel lift condition; and

generating a wheel lift flag in response to said first wheel lift condition, said second wheel lift condition, and said third wheel lift condition.

2. A method as recited in claim 1 wherein generating a wheel lift flag comprises generating a wheel lift flag for each of the plurality of wheels.

3. A method as recited in claim 1 further comprising:

comparing the first wheel lift condition to a first threshold;

comparing the second wheel lift condition to a second threshold; and

comparing the third wheel lift condition to a third threshold;

wherein generating a wheel lift flag comprises generating a wheel lift flag in response to comparing said first wheel lift condition to a first threshold, comparing said second wheel lift condition to a second threshold, and comparing said third wheel lift condition to a third threshold.