Method and device for reducing unwanted excitations at a steering wheel
First Claim
Patent Images
1. A device for reducing unwanted excitations at a steering wheel, comprising:
- a sensor system mounted to sense unwanted excitations at the steering wheel and/or a steering gear connected to the steering wheel; and
a closed-loop control unit connected to said sensor system, said control unit being configured to generate an additional steering torque signal on the basis of the sensed unwanted excitation, and to cause a servomotor to apply an additional steering torque on the steering gear;
said closed-loop control unit being configured to evaluate in quantitative and/or qualitative terms an unwanted excitation to be compensated, said unwanted excitation being due to a fault on the vehicle, and, when a predefined limiting value is exceeded, a fault entry is written into a monitoring unit and/or a driver is warned by a warning signal; and
said sensor system being mounted to sense an angular position of a rotor of the servomotor of an electromechanical steering system and a steering torque of the steering wheel, the sensor signals being tapped from an electromechanical steering support.
1 Assignment
0 Petitions
Accused Products
Abstract
A device and a method for reducing unwanted or undesireable excitations at a steering wheel include a sensor system with which unwanted excitation at a steering wheel and/or steering gear can be sensed. A closed-loop control unit is configured to generate an additional steering torque on the basis of the sensed unwanted excitation. A servomotor applies the additional steering torque to the steering gear.
36 Citations
7 Claims
-
1. A device for reducing unwanted excitations at a steering wheel, comprising:
-
a sensor system mounted to sense unwanted excitations at the steering wheel and/or a steering gear connected to the steering wheel; and a closed-loop control unit connected to said sensor system, said control unit being configured to generate an additional steering torque signal on the basis of the sensed unwanted excitation, and to cause a servomotor to apply an additional steering torque on the steering gear; said closed-loop control unit being configured to evaluate in quantitative and/or qualitative terms an unwanted excitation to be compensated, said unwanted excitation being due to a fault on the vehicle, and, when a predefined limiting value is exceeded, a fault entry is written into a monitoring unit and/or a driver is warned by a warning signal; and said sensor system being mounted to sense an angular position of a rotor of the servomotor of an electromechanical steering system and a steering torque of the steering wheel, the sensor signals being tapped from an electromechanical steering support. - View Dependent Claims (2, 3, 4, 6, 7)
-
-
5. A device for reducing unwanted excitations at a steering wheel, comprising:
-
a sensor system mounted to sense unwanted excitation at the steering wheel and/or a steering gear connected to the steering wheel; a servomotor connected to apply a steering torque to the steering gear; said sensor system being mounted to sense an angular position of a rotor of the servomotor of an electromechanical steering system and a steering torque of the steering wheel; a closed-loop control unit connected to receive sensor signals from said sensor system, configured to generate an additional steering torque signal on the basis of the sensor signals, and connected to output the additional steering torque signal and to thereby direct said servomotor to apply the additional steering torque to the steering gear; and said closed-loop control unit being configured to evaluate in quantitative and/or qualitative terms an unwanted excitation to be compensated, said unwanted excitation being due to a fault on the vehicle, and, when a predefined limiting value is exceeded, a fault entry is written into a monitoring unit and/or a driver is warned by a warning signal.
-
Specification