Roll stability control and roll-over mitigation by steering actuation
First Claim
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1. A method for reducing a risk of or avoiding a roll-over event of a vehicle having an electronic controllable steering system and an electronic control unit, the method comprising the steps of:
- the electronic control unit identifying an occurrence of the roll-over risk;
the electronic control unit determining an actual steering wheel velocity and a corresponding road wheel velocity;
the electronic control unit generating a control signal for the electronic controllable steering system in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over, the control signal including a corrective road wheel angle that is based on a difference between the actual steering wheel velocity and the corresponding road wheel velocity;
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driver input thereby limiting the driver input to a predetermined steering input; and
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driving situation influenced by vehicle lateral forces.
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Abstract
The invention relates to a method for reducing a risk of or avoiding a roll-over event of a vehicle, having means of an electronic controllable steering system and an electronic control unit. The electronic control unit identifies the occurrence of the roll-over risk, such that control means generate a signal in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over.
15 Citations
16 Claims
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1. A method for reducing a risk of or avoiding a roll-over event of a vehicle having an electronic controllable steering system and an electronic control unit, the method comprising the steps of:
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the electronic control unit identifying an occurrence of the roll-over risk;
the electronic control unit determining an actual steering wheel velocity and a corresponding road wheel velocity;the electronic control unit generating a control signal for the electronic controllable steering system in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over, the control signal including a corrective road wheel angle that is based on a difference between the actual steering wheel velocity and the corresponding road wheel velocity; the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driver input thereby limiting the driver input to a predetermined steering input; and the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driving situation influenced by vehicle lateral forces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for reducing a risk of or avoiding a roll-over event of a vehicle having an electronic controllable steering system and an electronic control unit, the method comprising the steps of:
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the electronic control unit identifying an occurrence of the roll-over risk;
the electronic control unit determining an actual steering wheel velocity and a corresponding road wheel velocity;the electronic control unit generating a control signal for the electronic controllable steering system in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over, the control signal including a corrective steering wheel angle that is based on a difference between the actual steering wheel velocity and the corresponding road wheel velocity; the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driver input and limits the driver input to a predetermined steering input; and the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driving situation influenced by vehicle lateral forces. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification