Method and control device for setting a working point of a slip controller for a wheel of a vehicle
AssigneeRobert Bosch GmbH
InventorsKai Hoffmann, Marco Stumm, Michael Erden, Rami Scharbak, Valentin Loeffelmann, Dirk Weidmann
Life of this patent
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Abstract
A method for setting a working point of a slip controller for a wheel of a vehicle. Upon activating the slip controller, a torque at the wheel is controlled on the basis of the working point using a slip at the wheel, wherein the torque is monitored and a value of the working point is set to a previous value of the torque if the slip satisfies a condition.
Claims8
A method for setting a working point of a slip controller for a wheel of a vehicle, wherein the activated slip controller controls a torque brought about at the wheel based on the working point, taking into account a currently measured slip between the wheel and a ground, the method comprising the following steps:
- repeatedly monitoring, before and/or during activation of the slip controller, the torque;
- monitoring the slip;
- detecting, while the slip controller is active, an inflection point from a negative gradient to a positive gradient of a time curve of the slip;
- based on the detecting, while the slip controller is active, of the inflection point from the negative gradient to the positive gradient of the time curve of the slip, setting a value of the working point to a temporally previous value of the torque from before a dead time of a brake system of the vehicle or of a drive system of the vehicle;
- and
- controlling, by the slip controller, the torque brought about at the wheel, based on the set value of the working point.
A control device configured to set a working point of a slip controller for a wheel of a vehicle, wherein the activated slip controller controls a torque brought about at the wheel based on the working point, taking into account a currently measured slip between the wheel and a ground, the control device configured to:
- repeatedly monitor, before and/or during activation of the slip controller, the torque;
- monitor the slip;
- detect, while the slip controller is active, an inflection point from a negative gradient to a positive gradient of a time curve of the slip;
- based on the detecting, while the slip controller is active, of the inflection point from the negative gradient to the positive gradient of the time curve of the slip, set a value of the working point to a temporally previous value of the torque from before a dead time of a brake system of the vehicle or of a drive system of the vehicle;
- wherein the slip controller controls the torque brought about at the wheel, based on the set value of the working point.
A non-transitory machine-readable storage medium on which is stored a computer program for setting a working point of a slip controller for a wheel of a vehicle, wherein the activated slip controller controls a torque brought about at the wheel based on the working point, taking into account a currently measured slip between the wheel and a ground, the computer program, when executed by a processor, causing the processor to perform the following steps:
- repeatedly monitoring, before and/or during activation of the slip controller, the torque;
- monitoring the slip;
- detecting, while the slip controller is active, an inflection point from a negative gradient to a positive gradient of a time curve of the slip;
- based on the detecting, while the slip controller is active, of the inflection point from the negative gradient to the positive gradient of the time curve of the slip, setting a value of the working point to a temporally previous value of the torque from before a dead time of a brake system of the vehicle or of a drive system of the vehicle;
- and
- controlling, using the slip controller, the torque brought about at the wheel, based on the set value of the working point.
Dependencies are inferred from the claim text.