Method for determining loading of a bearing, a computer program product, a control facility and a drive

US11060933B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ulf Bormann · Altdorf, DE
• Hans-Henning Klos · Nuremberg, DE
• Jürgen Schimmer · Koblenzer Straße, DE
• Jürgen Zettner · Veitsbronn, DE
• Dirk Scheibner · Nuremberg, DE

Key dates

• Filing date: Apr 26, 2019
• Grant date: Jul 13, 2021
• Expiry date: Nov 8, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2233/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method for determining loading of a bearing supporting a rotor of an electrical machine, the rotational speed and angular acceleration of the rotor is determined, matrix elements of a matrix are assigned to respective ranges of the angular acceleration and to respective ranges of the rotational speed, when the electrical machine is operated in a respective range of the angular acceleration and the rotational speed corresponding to the respective matrix element for a predefined time unit, an elementary variable, for example a value of 1, is added to the respective matrix element, and the loading of the bearing is determined as a weighted sum of the matrix elements. Thus, the matrix forms a representation of the operating time of the bearing and of the service life over time in relation to the rotational speeds and angular accelerations. The loading can be shown on a display.