Method for controlling a driving dynamics control device, and driving dynamics control device
AssigneeRobert Bosch GmbH
InventorsJochen Bodmann, Andreas Schmidtlein, Christoph Emde
Life of this patent
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Abstract
A method is provided for controlling a driving dynamics control unit for influencing the braking of wheels of a motor vehicle. The driving dynamics control device having a pump, which includes at least two pump elements for the supply of brake fluid, and an electric motor, which includes a rotor and a stator for driving the pump elements. The method includes the following steps: detecting the position of the rotor relative to the stator, and adjusting an ideal position of the rotor relative to the stator, the sum of the torques for moving the pump elements lying below a predefined torque limit value, in particular being minimal, in the ideal position.
Claims20
A method for controlling a driving dynamics control device which is configured to influence braking of wheels of a motor vehicle, the driving dynamics control device including a pump which includes at least two pump elements configured to supply brake fluid, and an electric motor which includes a rotor and a stator configured to drive the pump elements, the method comprising the following steps:
- determining an ideal position for the rotor relative to the stator, the ideal position being determined by:
- generating a predefined counterpressure against the supply by the pump of the brake fluid, and
- detecting the current of the electric motor required to drive the pump elements to supply the brake fluid against the generated counterpressure, the position of the rotor relative to the stator in which the detected required current for the electric motor to drive the pump elements to supply the brake fluid against the generated counterpressure lies below a predefined current value being defined as the ideal position;
- detecting a position of the rotor relative to the stator;
- and
- adjusting the position of the rotor relative to the stator to the ideal position, a sum of torques for moving the pump elements lying below a predefined torque limit value in the ideal position.
A driving dynamics control device for influencing braking of wheels of a motor vehicle, the driving dynamics control device comprising:
- a pump having at least two pump elements for a supply of a brake fluid;
- an electric motor including a rotor and a stator configured to drive the pump elements;
- a position detection device configured to detect a position of the rotor relative to the stator;
- and
- a control device configured to adjust the position of the rotor relative to the stator to an ideal position, a sum of torques for moving the pump elements lying below a predefined torque limit value in the ideal position;
- wherein the ideal position for the rotor relative to the stator is determined by:
- generating a predefined counterpressure against the supply by the pump of the brake fluid, and
- detecting the current of the electric motor required to drive the pump elements to supply the brake fluid against the generated counterpressure, the position of the rotor relative to the stator in which the detected required current for the electric motor to drive the pump elements to supply the brake fluid against the generated counterpressure lies below a predefined current value being defined as the ideal position.
Dependencies are inferred from the claim text.