Back to results
US 8,798,864 B2Granted
Road wheel disturbance rejection
AssigneeSteering Solutions IP Holding Corporation
InventorsAnthony J. Champagne, Michael K. Hales
Life of this patent
Estimating the term…
Abstract
A control method for an electric power steering system is provided. The control method includes evaluating wheel disturbance based on a wheel velocity. A wheel disturbance cancel amount is determined based on the wheel velocity. An assist command is generated to the power steering system based on the wheel disturbance cancel amount.
Claims20
A control system for a power steering system, comprising:
- a first module that evaluates a wheel disturbance based on a wheel velocity and that determines a wheel disturbance cancel amount based on a handwheel torque and a filtered wheel velocity generated by applying a filter to the wheel velocity, the filter based on a frequency of a variation of a wheel sensor signal indicating the wheel velocity;
- and
- a second module that generates a final assist command to the power steering system based on the wheel disturbance cancel amount and the filtered wheel velocity.
A control method for an electric power steering system, comprising:
- evaluating a wheel disturbance based on a filtered wheel velocity received as an input by a control module, the filtered wheel velocity generated by applying a filter to a wheel velocity, the filter based on a frequency of a variation of a wheel sensor signal indicating the wheel velocity;
- determining a wheel disturbance cancel amount based on a handwheel torque and the filtered wheel velocity by the control module;
- and
- generating a final assist command to the power steering system based on the wheel disturbance cancel amount by the control module.
1 more element
A system for determining road wheel disturbance in a vehicle, comprising:
- an electric power steering system;
- and
- a control module that evaluates wheel disturbance based on a wheel velocity, that receives as an input a handwheel torque and a filtered wheel velocity generated by applying a filter to the wheel velocity, the filter based on a frequency of a variation of a wheel sensor signal indicating the wheel velocity, that determines a wheel disturbance cancel amount based on the filtered wheel velocity, that generates an assist command to the power steering system based on the wheel disturbance cancel amount.
Dependencies are inferred from the claim text.