Apparatus and method for driver activity dependent ADAS wheel angle controller
First Claim
1. A steer torque manager for an advanced driver assistance system of a road vehicle having an electrical power assisted steering functionality, the steer torque manager comprising:
- a driver-in-the-loop functionality for determining when and how to hand over control from the advanced driver assistance system to a driver; and
a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from the electrical power assisted steering functionality;
wherein the steer torque manager is configured to receive an assistance torque related signal, and wherein the steer torque manager is further configured to scale, in a scaling functionality, a bandwidth of the wheel angle controller based on a measure of driver activity wherein the bandwidth is reduced in response to the measure of driver activity indicating high driver activity, and wherein the bandwidth is increased in response to the measure of driver activity indicating low driver activity that is lower than the high driver activity;
wherein the assistance torque related signal is provided as a vehicle traveling velocity dependent amplification of a steering wheel torsion bar torque.
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Accused Products
Abstract
A steer torque manager for an advanced driver assistance system of a road vehicle and a method therefor. The steer torque manager includes a driver in the loop functionality for determining when to hand over control to a driver, and a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from an electrical power assisted steering. The steer torque manager is configured to receive an assistance torque related signal and arranged to scale, in a scaling functionality the bandwidth of the wheel angle controller based on a measure of driver activity, such that the bandwidth is reduced if the measure of driver activity indicates high driver activity and increased if the measure of driver activity indicates low driver activity.
55 Citations
19 Claims
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1. A steer torque manager for an advanced driver assistance system of a road vehicle having an electrical power assisted steering functionality, the steer torque manager comprising:
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a driver-in-the-loop functionality for determining when and how to hand over control from the advanced driver assistance system to a driver; and a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from the electrical power assisted steering functionality; wherein the steer torque manager is configured to receive an assistance torque related signal, and wherein the steer torque manager is further configured to scale, in a scaling functionality, a bandwidth of the wheel angle controller based on a measure of driver activity wherein the bandwidth is reduced in response to the measure of driver activity indicating high driver activity, and wherein the bandwidth is increased in response to the measure of driver activity indicating low driver activity that is lower than the high driver activity; wherein the assistance torque related signal is provided as a vehicle traveling velocity dependent amplification of a steering wheel torsion bar torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18)
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12. A method performed by a steer torque manager for an advanced driver assistance system of a road vehicle having an electrical power assisted steering functionality, the steer torque manager comprising a driver-in-the-loop functionality for determining when and how to hand over control from the advanced driver assistance system to a driver, a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from the electrical power assisted steering functionality, the steer torque manager configured to receive an assistance torque related signal, the method comprising:
scaling a bandwidth of the wheel angle controller based on a measure of driver activity wherein the bandwidth is reduced in response to the measure of driver activity indicating high driver activity, and wherein the bandwidth is increased in response to the measure of driver activity indicating low driver activity that is lower than the high driver activity, wherein the assistance torque related signal is provided as a vehicle traveling velocity dependent amplification of a steering wheel torsion bar torque.
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13. A steer torque manager for an advanced driver assistance system of a road vehicle having an electrical power assisted steering functionality, the steer torque manager comprising:
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a driver-in-the-loop functionality for determining when and how to hand over control from the advanced driver assistance system to a driver; and a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from the electrical power assisted steering functionality; wherein the steer torque manager is configured to receive an assistance torque related signal, and wherein the steer torque manager is further configured to scale, in a scaling functionality, a bandwidth of the wheel angle controller based on a measure of driver activity wherein the bandwidth is reduced in response to the measure of driver activity indicating a first driver activity, and wherein the bandwidth is increased in response to the measure of driver activity indicating second driver activity that is less than the first driver activity, wherein the assistance torque related signal is provided as a vehicle traveling velocity dependent amplification of a steering wheel torsion bar torque. - View Dependent Claims (19)
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Specification