Henning Zoubek

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This paper deals with a new diagnosis method for detecting bearing faults. The diagnosis is carried out based on frequency response analysis. The detection of bearing damages on motor and load side of a mechanical drive system is addressed. The mechanics are assumed to be a two-inertia-system with one dominant resonant frequency. The frequency response of(More)
This paper deals with a new diagnosis method for detecting bearing faults (BFs) based on frequency response analysis. For non-rigid multi-mass systems with dominant mechanical resonance frequencies, the frequency response has to be calculated during the commissioning of the plant for reasons of safety and controlling. This task can be achieved by measuring(More)
The focus of the present paper lies on the identification of mechanical two-inertia-systems based on frequency response measurement without the need of angular transducers. The calculation of the frequency response is carried out by excitation of the system with Pseudo-Random-Binary-Signals followed by a signal processing procedure utilizing the(More)
Identification procedures for multi-mass-systems are a key factor during the commissioning of the plant to gain the mechanical parameters such as inertias or stiffness of the shafts. Only with the knowledge of these values the controllers of the drive can be parameterized in the correct manner to achieve the desired behavior of the plant. Further, with(More)
This paper presents a two-step identification procedure for two-mass-systems in speed-sensorless operation based on frequency response measurement. By utilizing a speed adaptive observer structure, the encoderless control technique for the induction machine provides estimated speed information that can serve for a basic identification of the mechanical(More)
This paper deals with a new automated diagnosis method for detecting bearing faults. The diagnosis is carried out by frequency response analysis of the mechanical system of the drive. The detection of bearing damages of a ball bearing on motor and load side of the mechanical drive system is addressed. The mechanics is assumed to be a two-inertia-system with(More)
This paper describes a novel sensorless identification method for mechanical two-mass-systems and the influence of varying parameters and operation conditions on its performance. The identification procedure is carried out during the encoderless control of the drive system and based on the frequency response measurement of the mechanical setup. An extended(More)
The present paper deals with the capability of bearing fault detection in speed-sensorless operated mechanical multi-mass-systems by frequency response measurement. During the commissioning of multi-inertia-setups, an identification of the mechanical system is mandatory for the correct controller design of the drive. The frequency response calculation is(More)
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