Rotational speed control for steered axles of a vehicle
AssigneeVolvo Truck Corporation
InventorsJonas PERSSON, Leo LAINE
Life of this patent
Estimating the term…
Abstract
A computer system and computer-implemented method for determining a rotational speed limit for a steered axle of a vehicle having two steered axles are disclosed. The computer system has processing circuitry to acquire a combined slip limit for the steered axle based on a slip diamond; determine a longitudinal slip limit for the steered axle based on the combined slip limit and a current lateral slip of the steered axle; and determine a rotational speed limit for the steered axle based on the determined longitudinal slip limit, a radius of a wheel of the steered axle, and a current longitudinal velocity of the vehicle.
Claims20
A computer system for determining a rotational speed limit for a steered axle of a vehicle having two steered axles, the computer system comprising processing circuitry configured to:
- acquire a combined slip limit for the steered axle based on a slip diamond defining desired limits of longitudinal and lateral slip for the steered axle;
- acquire a current lateral slip of the steered axle;
- determine a longitudinal slip limit for the steered axle based on the combined slip limit and the current lateral slip of the steered axle;
- and
- determine a rotational speed limit for the steered axle based on the determined longitudinal slip limit, a radius of a wheel of the steered axle, and a current longitudinal velocity of the vehicle.
A computer-implemented method for determining a rotational speed limit for a steered axle of a vehicle having two steered axles, the computer-implemented method comprising:
- acquiring, by processing circuitry of a computer system, a combined slip limit for the steered axle based on a slip diamond defining desired limits of longitudinal and lateral slip for the steered axle;
- acquiring, by the processing circuitry, a current lateral slip of the steered axle;
- determining, by the processing circuitry, a longitudinal slip limit for the steered axle based on the combined slip limit and the current lateral slip of the steered axle;
- and
- determining, by the processing circuitry, a rotational speed limit for the steered axle based on the determined longitudinal slip limit, a radius of a wheel of the steered axle, and a current longitudinal velocity of the vehicle.
Dependencies are inferred from the claim text.