Method for controlling and possibly recovering the adhesion of the wheels of a controlled axle of a railway vehicle
US10780904B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Apr 17, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L15/0072
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling and recovering the adhesion, during a slipping phase, of wheels (Wi) belonging to at least two controlled axles (Ai) of a railway vehicle, comprising the steps of: generating speed signals indicative of the angular speed (ωi) of said wheels (Wi); estimating the value of the instantaneous adhesion (μ(Tj)) at the point of contact of such wheels (Wi) and the rails, using an adhesion observer; generating a target-slip value (δ) for the wheels (Wi) of the controlled axles (Ai) by means of an optimization algorithm which processes the estimated adhesion values (μi(Tj)), and modifying the target-slip value continuously in time, with a predetermined sampling period, such as to maximize the average value of the adhesion of the wheels of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.