Method and device for the compensation of steering wheel rotary oscillations in a steering system
First Claim
1. A method of compensating for steering wheel rotary oscillations due to imbalances on wheels of a vehicle during operation of a steering system in said vehicle, said steering system comprising an activatable torque actuator,the method comprising:
- determining a current torsion bar torque;
determining a compensation torque as a function of the current torsion bar torque; and
activating the torque actuator as a function of the compensation torque;
wherein the torsion bar torque or a first variable determined as a function of the torsion bar torque is fed to a variable-frequency disturbance variable and state variable calculator which contains a model of a sinusoidal disturbance of steering wheel rotary oscillations and a model of a transmission behavior from a torque of the torque actuator; and
wherein the compensation torque is determined by the variable-frequency disturbance variable and state variable calculator using the model of the sinusoidal disturbance of steering wheel rotary oscillations.
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Accused Products
Abstract
A torque actuator is regulated so as to permit an activation of the torque actuator such that steering wheel rotary oscillations that occur can be compensated. For this purpose, in one embodiment, a torsion bar torque is detected. A compensation torque is determined as a function of the detected torsion bar torque by means of a variable-frequency disturbance variable and state variable calculator. The compensation torque or a signal corresponding to the compensation torque is then taken into consideration during activation of the torque actuator.
22 Citations
16 Claims
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1. A method of compensating for steering wheel rotary oscillations due to imbalances on wheels of a vehicle during operation of a steering system in said vehicle, said steering system comprising an activatable torque actuator,
the method comprising: -
determining a current torsion bar torque; determining a compensation torque as a function of the current torsion bar torque; and activating the torque actuator as a function of the compensation torque; wherein the torsion bar torque or a first variable determined as a function of the torsion bar torque is fed to a variable-frequency disturbance variable and state variable calculator which contains a model of a sinusoidal disturbance of steering wheel rotary oscillations and a model of a transmission behavior from a torque of the torque actuator; and wherein the compensation torque is determined by the variable-frequency disturbance variable and state variable calculator using the model of the sinusoidal disturbance of steering wheel rotary oscillations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device for compensating for steering wheel rotary oscillations due to imbalances on wheels of a vehicle during operation of a steering system in said vehicle, wherein the steering system comprises an activatable torque actuator and means for determining a current torsion bar torque, and wherein the device comprises:
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a variable-frequency disturbance variable and state variable calculator for determining a compensation torque, and which contains a model of a sinusoidal disturbance of steering wheel rotary oscillations and a model of a transmission behavior from a torque of the torque actuator; means for activating the torque actuator as a function of the compensation torque; wherein the torsion bar torque or a first variable determined as a function of the torsion bar torque is fed to the variable-frequency disturbance variable and state variable calculator; and wherein the compensation torque is determined by the variable-frequency disturbance variable and state variable calculator using the model of the sinusoidal disturbance of steering wheel rotary oscillations. - View Dependent Claims (16)
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Specification