Bremsaktuator, Computerimplementiertes Verfahren, Computerprogramm, Nichtflüchtiger Datenträger und Bremssystem für ein Schienenfahrzeug

Details

Veröffentlichungs-Nr.

EP4474234

Aktenzeichen

EP23178362

Anmeldetag

9. Juni 2023

Veröffentlichung

11. Dezember 2024

Rechtsraum

EP

IPC

B60T13/74B60T8/17B60T8/171B60T8/172B60T17/22F16D66/00// F16D121/24

Abstract

In a rail vehicle (100), a brake actuator (120) receives a brake command (BC) specifying a target force. In response to the brake command (BC), the brake actuator (120) control an electrically operated brake unit (130) to perform a braking operation. The brake actuator contains a control unit that generates a brake control signal (BS) based on the brake command (BC). The brake control signal (BS), in turn, controls an electric motor (131) in the electrically operated brake unit (130), such that an output shaft of the electric motor (131) attains a specified angular position (P) in which at least one pressing member (135) is caused to apply a force against a rotating member (136) being mechanically connected to a wheel axle (141) of the rail vehicle (100). The control unit also obtains first and second sensor signals (P_m, FS). The first sensor signal (P_m) reflects a measured position of the output shaft of the electric motor (131), which measured position constitutes an indication of the specified angular position (P). The second sensor signal (FS) reflects a magnitude of the applied force. The control unit checks the second sensor signal (FS) against a force-to-position mapping describing a linear relationship between the specified angular position (P) and an estimated magnitude of the applied force. Thus, the control unit may verify the relationship between the specified angular position (P) and the estimated magnitude.

Anmelder

Firma

Dellner Bubenzer AB

Land

🇸🇪 Schweden

Fachgebiete