Tire proposal system
US-11781884-B2 · Oct 10, 2023 · US
Method for tracking the position and the heading of a vehicle using dead reckoning and a tracking device for carrying out the method
US8935121B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8935121-B2 |
| Application number | US-96444710-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 9, 2010 |
| Priority date | Nov 4, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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Position (x ref ) and heading (H) of a vehicle are tracked using wheel tick numbers coming from wheel tick units at the front wheels only from which a velocity (v) and a heading rate (h) are calculated. The calculations are based on an intermediate wheel angle (δ). An exact solution δ ex for the same depends on the velocities of the left front wheel v l and the right front wheel v r . An approximate solution δ app is calculated according to a simpler formula and used wherever its deviation from the exact solution δ ex is not significant, i.e., where the latter is not larger than a threshold wheel angle δ thr . Only for δ app >δ thr where the deviation is larger than a threshold, the wheel angle according to the exact solution δ ex is used. The latter is determined by first establishing the approximate solution δ app and reading the corresponding exact solution δ ex from a look-up table.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for tracking a position and a heading of a vehicle, at least intermittently using dead reckoning tracking based on velocities of left and right front wheels, the method comprising: receiving, by using a processor, measurement parameters indicative of a velocity v l of the left front wheel and measurement parameters indicative of a velocity v r of the right front wheel, deriving, by using the processor, a value for the velocity v l of the left f…
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Physics · mapped topic
- G01C22/025Primary
Physics · mapped topic
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- What does patent US8935121B2 cover?
- Position (x ref ) and heading (H) of a vehicle are tracked using wheel tick numbers coming from wheel tick units at the front wheels only from which a velocity (v) and a heading rate (h) are calculated. The calculations are based on an intermediate wheel angle (δ). An exact solution δ ex for the same depends on the velocities of the left front wheel v l and the right front wheel v r . An appr…
- Who is the assignee on this patent?
- Hollenstein Christine, Ublox Ag
- What technology area does this patent fall under?
- Primary CPC classification G01C22/025. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).