Patent · US Active

Method for fault detection and diagnosis of a rotary machine

US7756649B2 · kind B2 · utility

4Cited by

3References

5Claims

0Family size

Assignee

Schenck RoTec GmbH · DE

Inventors

Joachim Baehr · Darmstadt, DE
Rolf Isermann · Seeheim-Jugenheim, DE
Wolfgang Scheithe · Griesheim, DE
Dieter Thelen · Seeheim-Jugenheim, DE

Key dates

Filing date	Aug 28, 2008
Grant date	Jul 13, 2010
Priority date	—
Expiry date	Nov 14, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01H1/003
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Modem rotary machine production requires built-in fault detection and diagnoses. The occurrence of faults, e.g. increased friction or loose bonds has to be detected as early as possible. Theses faults generate a nonlinear behavior. Therefore, a method for fault detection and diagnosis of a rotary machine is presented. Based on a rotor system model for the faulty and un-faulty case, subspace-based identification methods are used to compute singular values that are used as features for fault detection. The method is tested on an industrial rotor balancing machine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.