The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1995
Filed:
Sep. 29, 1993
Leonhard Reng, Herzogenaurach, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A rail vehicle may be provided with a plurality of individual wheels (11, 12, 21, 22) and traction motors which are supplied with power on a wheel block by wheel block basis by means two control devices each including open loop and closed loop controls (6, 8). The wheel speeds (n11, n12, n21, n22) are used to determine two wheel block speeds (n1, n2), from which an actual speed difference value (.DELTA.n) is calculated. A manipulated variable (.DELTA.m*) is produced from a comparison of the actual speed differences value (.DELTA.n) to a set speed difference value (.DELTA.n*). A set traction lever value (m,) is increased and reduced by this manipulated variable (.DELTA.m). Consequently, the wheel blocks (1, 2) obtain a definitively set speed difference corresponding to the arc radius (r), whereby the running behavior on bends is significantly improved by virtue of the satisfied rolling condition.