Reibungstestsystem, Computer-Implementiertes Reibungstestverfahren für Schienenfahrzeuge, Computerprogramm und Nichtflüchtiger Datenträger
Anmelder: Dellner Bubenzer AB 🇸🇪
Details
- Veröffentlichungs-Nr.
- EP4275985
- Aktenzeichen
- EP22172518
- Anmeldetag
- 10. Mai 2022
- Veröffentlichung
- 15. November 2023
- Rechtsraum
- EP
- IPC
- B61C15/08B60L3/10B60T17/22
Abstract
In a rail vehicle (100) a control unit (140) controls a set of brake/ traction units (101, 161; 102, 162; 103, 163; 104, 164) by control signals (B1, A1; B2, A2; B3, A3; B4, A4) to apply a respective brake/traction force to a respective wheel axle (131, 132, 133, 134 to cause retardation/acceleration of the rail vehicle (100). The control unit (140) obtains a first wheel speed signal (ω<sub>1</sub>) indicating a rotational speed of at least one first wheel (121), and obtains a second wheel speed signal (ω<sub>a</sub>) indicating an average rotational speed of at least one second wheel (122, 123, 124). The control unit (140) produces a first control signal (BF; A1) to the first brake/ traction unit (101, 161) such that this unit applies a gradually increasing brake/traction force to the first wheel axle (131) until an absolute difference (|ω<sub>1</sub> - ω<sub>a</sub>|) between the first and second wheel speed signals (ω<sub>1</sub>; ω<sub>a</sub>) exceeds a threshold value. In response to the absolute difference (|ω<sub>1</sub> - ω<sub>a</sub>|) exceeding the threshold value, the control unit (140) determines a parameter (µ<sub>m</sub>) reflecting a friction coefficient (µ<sub>e</sub>) between the wheels (121, 122, 123, 124) and a set of rails (181, 182) upon which the rail vehicle (100) travels.
Anmelder
- Firma
- Dellner Bubenzer AB
- Land
- 🇸🇪 Schweden
Schwedisches Unternehmen für Bahntechnik, entwickelt Kupplungssysteme, Bremsen und Sicherheitskomponenten für Schienenfahrzeuge.
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