Method for the automatic detection and identification of errors in a balancing machine

US8561463B2 · kind B2 · utility

Assignee

• Schenck RoTec GmbH · DE

Inventors

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

Key dates

• Filing date: Aug 11, 2010
• Grant date: Oct 22, 2013
• Expiry date: Jan 25, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M1/22
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method is disclosed for the automatic detection and identification of errors in a balancing machine during operation, in which a rotor provided with an unbalance is rotatably mounted in a vibratory bearing in the balancing machine and is set in rotation by a drive, the rotational frequency of the rotating rotor and the vibrations stimulated by the rotor are measured and measurement signals which comprise the measured values of the rotational frequency and the vibrations are generated and delivered to an evaluation computer. The evaluation calculation is based on mathematical models of the dynamic properties of the balancing machine which describe stimulations of the machine structure due to the unbalance, in particular in the balancing planes, and/or due to the rotor geometry and/or due to the bearing and/or possible damage to the bearing. Features such as vibration characteristics and/or process parameters are calculated by a signal-model-based method from the measurement signals, and discrepancies are established by comparing the calculated features with predetermined normal features of an error-free process.