Estimation of a ride height of an axle
AssigneeVolvo Truck Corporation
InventorChidambaram SUBRAMANIAN
Life of this patent
Estimating the term…
Abstract
A computer system comprising a processor device configured estimate a current ride height of a first axle of a vehicle is provided. The processor device is configured to obtain a variation in rotational speed of a first drive shaft. The first drive shaft is driven by a second drive shaft rotating a mechanical joint connected to both the first drive shaft and the second drive shaft. The processor device is configured to estimate the current ride height of the first axle based on the variation in rotational speed of the first drive shaft, an obtained initial ride height of the first axle, and an obtained condition signal. The condition signal indicates a second angle of the second drive shaft, or indicates a ride height of a second axle.
Claims15
A computer system comprising a processor device configured estimate a current ride height of a first axle of a vehicle, the first axle being connected to a first drive shaft, the first drive shaft being driven by a second drive shaft by the second drive shaft rotating a mechanical joint connected to both the first drive shaft and the second drive shaft, the first drive shaft having a first angle to the mechanical joint, and the second drive shaft having a second angle to the mechanical joint, and wherein the current ride height of the first axle is at least partly determined by the first angle and the second angle, the processor device further being configured to:
- obtain an initial ride height of the first axle;
- for a predetermined time period, obtain a variation in rotational speed of the first drive shaft, the variation in rotational speed being caused at least partially by the first angle and the second angle;
- obtain a condition signal indicating any one or more out of:
- that the second angle is fixed within an interval of a predetermined error margin,
- a current ride height of a second axle, wherein the current ride height of the second axle at least partly determines the second angle;
- and
- estimate the current ride height of the first axle based on the variation in rotational speed of the first drive shaft, the obtained initial ride height of the first axle, and the condition signal.
A computer-implemented method for estimating a current ride height of a first axle of a vehicle, the first axle being connected to a first drive shaft, the first drive shaft being driven by a second drive shaft by the second drive shaft rotating a mechanical joint connected to both the first drive shaft and the second drive shaft, the first drive shaft having a first angle to the mechanical joint, and the second drive shaft having a second angle to the mechanical joint, and wherein the current ride height of the first axle is at least partly determined by the first angle and the second angle,
- the method comprising:
- by a processor device of a computer system, obtaining an initial ride height of the first axle;
- by the processor device, for a predetermined time period, obtaining a variation in rotational speed of the first drive shaft, the variation in rotational speed being caused at least partially by the first angle and the second angle;
- by the processor device, obtaining a condition signal indicating any one or more out of:
- that the second angle is fixed within an interval of a predetermined error margin,
- a current ride height of a second axle, wherein the current ride height of the second axle at least partly determines the second angle;
- and
- by the processor device, estimating the current ride height of the first axle based on the variation in rotational speed of the first drive shaft, the obtained initial ride height of the first axle, and the condition signal.
Dependencies are inferred from the claim text.