Projected steering control system
AssigneeGM Global Technology Operations LLC
InventorsMichael C. Gaunt, Travis Steve Larson
Life of this patent
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Abstract
A steering control system for a vehicle includes a hand wheel actuator (HWA), sensors configured to sense an HWA angle and HWA torque. A road wheel actuator (RWA) controls at least one of an RWA angle and an RWA velocity of a road wheel of the vehicle. When the HWA angle is greater than a predetermined HWA angle, the steering controller is configured to perform at least two of use a first model or lookup table to generate a first RWA angle in response to the HWA angle, use a second model or lookup table to generate a second RWA angle in response to the HWA torque, use a third model or lookup table to generate a first RWA velocity in response to the HWA angle, and use a fourth model or lookup table to generate a second RWA velocity in response to the HWA torque.
Claims20
A steering control system for a vehicle, comprising:
- a first sensor configured to sense an HWA angle of a hand wheel actuator (HWA);
- a second sensor configured to sense an HWA torque of the HWA;
- a steering controller configured to:
- receive the HWA angle and the HWA torque;
- and
- when the HWA angle is greater than a predetermined HWA angle, perform at least two of:
- use a first model or lookup table to generate a first road wheel actuator (RWA) angle in response to the HWA angle;
- use a second model or lookup table to generate a second RWA angle in response to the HWA torque;
- use a third model or lookup table to generate a first RWA velocity in response to the HWA angle;
- use a fourth model or lookup table to generate a second RWA velocity in response to the HWA torque;
- and
- a RWA controller configured to determine at least one of a RWA angle and a RWA velocity of the RWA in response to at least two of the first RWA angle multiplied by a first gain, the second RWA angle multiplied by a second gain, the first RWA velocity multiplied by a third gain, and the second RWA velocity multiplied by a fourth gain.
A steering control system for a vehicle, comprising:
- a first sensor configured to sense a hand wheel actuator (HWA) angle;
- a second sensor configured to sense an HWA torque;
- a steering controller configured to:
- receive the HWA angle and the HWA torque;
- and
- when the HWA angle is greater than a predetermined HWA angle and enabling criteria are met:
- use a first model or lookup table to generate a first road wheel actuator (RWA) angle in response to the HWA angle;
- use a second model or lookup table to generate a second RWA angle in response to the HWA torque;
- use a third model or lookup table to generate a first RWA velocity in response to the HWA angle;
- and
- use a fourth model or lookup table to generate a second RWA velocity in response to the HWA torque;
- and
- a RWA controller configured to determine a RWA angle and a RWA velocity in response to the first RWA angle multiplied by a first gain, the second RWA angle multiplied by a second gain, the first RWA velocity multiplied by a third gain, and the second RWA velocity multiplied by a fourth gain.
Dependencies are inferred from the claim text.