VEHICLE MOVEMENT DYNAMICS CONTROL METHOD
First Claim
1. A method for controlling the movement dynamics of a motor vehicle, in which a measured transverse dynamics variable is compared with a transverse dynamics variable which is calculated by a vehicle model, wherein it is checked whether the vehicle is understeering and, in this case, the difference between the measured and the calculated transverse dynamics variable is reduced by building up braking forces at the wheels of at least the front axle independently of the driver, wherein the time gradient of the braking force at each wheel at which a braking force is built up is selected in accordance with the difference between the measured and the calculated transverse dynamics variable.
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Abstract
A method for controlling the movement dynamics of a motor vehicle, in which a measured transverse dynamics variable is compared with a transverse dynamics variable which is calculated on the basis of a vehicle model, wherein it is checked whether the vehicle is understeering, and in this case the difference between the measured and the calculated transverse dynamics variables is reduced by increasing braking forces at the wheels of at least the front axle independently of the driver. According to the invention, the time gradient of the braking force at each wheel at which a braking force is increased is selected in accordance with the difference between the measured and calculated transverse dynamics variables. In addition, the invention relates to a brake system for a motor vehicle.
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Citations
13 Claims
- 1. A method for controlling the movement dynamics of a motor vehicle, in which a measured transverse dynamics variable is compared with a transverse dynamics variable which is calculated by a vehicle model, wherein it is checked whether the vehicle is understeering and, in this case, the difference between the measured and the calculated transverse dynamics variable is reduced by building up braking forces at the wheels of at least the front axle independently of the driver, wherein the time gradient of the braking force at each wheel at which a braking force is built up is selected in accordance with the difference between the measured and the calculated transverse dynamics variable.
- 9. A braking system for a motor vehicle, comprising at least two sensors for measuring transverse dynamics variables, such as the yaw rate and/or transverse acceleration and/or steering angle, and a wheel speed sensor at each wheel of the vehicle, wherein at least the wheels of the front axle of the motor vehicle have wheel brakes, which enable braking forces to be built up independently of the driver at individual wheels, wherein an electronic control unit which carries out a method for controlling movement dynamics of a motor vehicle, in which a measured transverse dynamics variable is compared with a transverse dynamics variable which is calculated by a vehicle model, wherein it is checked whether the vehicle is understeering and, in this case, the difference between the measured and the calculated transverse dynamics variable is reduced by building up braking forces at the wheels of at least the front axle independently of the driver, wherein the time gradient of the braking force at each wheel at which a braking force is built up is selected in accordance with the difference between the measured and the calculated transverse dynamics variable.
Specification