DEVICE AND METHOD FOR CONTROLLING AN AUTOMATIC STEERING SYSTEM OF A VEHICLE, AND DEVICE AND METHOD FOR CHECKING THE ABILITY TO IMPLEMENT A PREDEFINED SETPOINT TRAVEL DIRECTION VARIABLE FOR A VEHICLE
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Accused Products
Abstract
A device for controlling an automatic steering system of a vehicle includes a signal input (which receives a setpoint travel direction variable, a memory device on which a correction factor is stored, a control unit which ascertains a corrected setpoint travel direction variable on the basis of the correction factor and the predefined setpoint travel direction variable, and an evaluation device which compares an actual travel direction variable ascertained by a sensor of the vehicle to the predefined setpoint travel direction variable, and if the actual travel direction variable deviates from the predefined setpoint travel direction variable by at least a minimum difference, redefines the correction factor according to the comparison.
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Citations
20 Claims
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1-10. -10. (canceled)
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11. A device for controlling an automatic steering system of a vehicle, comprising:
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a signal input unit configured to receive a setpoint travel direction variable specified by an automatic vehicle control system; a memory device storing at least one correction factor and configured to facilitate read out of the correction factor; a control unit configured to (i) ascertain a corrected setpoint travel direction variable on the basis of the correction factor and the setpoint travel direction variable, and (ii) switch the automatic steering system to an operating mode for maintaining the corrected setpoint travel direction variable; and an evaluation device configured to (i) receive an actual travel direction variable ascertained by a sensor of the vehicle, (ii) compare the actual travel direction variable to the setpoint travel direction variable, and (iii) if the actual travel direction variable deviates from the setpoint travel direction variable by at least a predetermined minimum difference, adjust the correction factor based on the comparison and store the adjusted correction factor in the memory device. - View Dependent Claims (12, 13, 14)
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15. A control device configured ascertain the ability to implement a predefined setpoint travel direction variable for controlling a vehicle, comprising:
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a first signal input configured to receive the predefined setpoint travel direction variable specified by at least one of a driver and an automatic vehicle control system; a second signal input configured to receive at least one adjustment force, wherein the adjustment force is ascertained by at least one sensor of the vehicle for adjusting at least one of a steering wheel and a wheel of the vehicle when the instantaneous direction of travel of the vehicle changes according to the setpoint travel direction variable; a comparator configured to (i) compare the adjustment force to at least one predefined comparative value, and (ii) provide a comparative signal according to the comparison; and an evaluation device configured to (i) receive the comparative signal, (ii) determine that the ability to implement the predefined setpoint travel direction variable for the vehicle does not correspond to a selected standard if the adjustment force deviates from the at least one predefined comparative value by at least a predetermined minimum difference, and (iii) provide an information signal indicative of the determination regarding the ability to implement the predefined setpoint travel direction variable, wherein the information signal is output to at least one of the automatic vehicle control system, a display device for informing the drive, and an announcement device for informing the driver. - View Dependent Claims (16, 17, 18)
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19. A method for controlling an automatic steering system of a vehicle, comprising:
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a) receiving a setpoint travel direction variable specified by an automatic vehicle control system; b) reading out a stored correction factor; c) ascertaining a corrected setpoint travel direction variable on the basis of the correction factor and the setpoint travel direction variable; d) switching the automatic steering system to an operating mode for maintaining the corrected setpoint travel direction variable; e) ascertaining an actual travel direction variable of the vehicle; f) comparing the actual travel direction variable to the setpoint travel direction variable; g) redefining the correction factor according to the comparison if the actual travel direction variable deviates from the setpoint travel direction variable by at least a predefined minimum difference; and h) storing the redefined correction factor for at least one iteration of steps a) through d).
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20. A method for ascertaining the ability to implement a predefined setpoint travel direction variable for controlling a vehicle, comprising:
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receiving the setpoint travel direction variable specified by at least one of a driver and an automatic vehicle control system; changing the instantaneous direction of travel of the vehicle according to the setpoint travel direction variable; ascertaining an adjustment force applied when the instantaneous direction of travel changes for adjusting at least one of the steering wheel and a wheel of the vehicle; comparing the ascertained adjustment force to at least one predefined comparative value; determining that the ability to implement the predefined setpoint travel direction variable for the vehicle does not correspond to a selected standard if the adjustment force deviates from the at least one predefined comparative value by at least a predetermined minimum difference; and at least one of (i) displaying visual information to the driver indicating the determination regarding the ability to implement the predefined setpoint travel direction variable, (ii) providing audio information to the driver indicating the determination regarding the ability to implement the predefined setpoint travel direction variable, and (iii) outputting to the automatic vehicle control system an informational signal indicative of the determination regarding the ability to implement the predefined setpoint travel direction variable.
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Specification