Recent research and development on direct–drive motor technology and on their control system push forwardthe application of these devices as electric cams in a large numbers of industrial applications, such as examplemotion control system for packaging machineries. Performances of these devices are much higher than themechanical solutions for machine motion, in terms of precision and operational speed, and, of course, intime required to reconfigure the motion profile.However, classical approaches to the ball bearing diagnosis that use analysis of vibration signals are notlonger applicable, as they have been developed on the hypothesis of drive constant speed. In fact, in mostof the current industrial application, the control system drives the motor to follow a complex and cyclic (i.e.motor shaft reverses its motion direction at each operational cycle) non constant speed motion profile.In those application, even Computed Order Tracking [1] (COT), which is the main fault bearing diagnosistechnique used in non-constant velocity applications, fails to detect incipient faults, as highlighted by Fyfeand Munck in [2].This paper presents a new procedure that modifies the COT to be successfully applicable to the diagnosisproblem of ball bearings in variable speed motion applications.

Predictive maintenance of ball bearings for machines rotating with arbitrary velocity profiles / Cocconcelli, Marco; Secchi, Cristian; Rubini, Riccardo; Fantuzzi, Cesare; Bassi, L.. - ELETTRONICO. - 4:(2008), pp. 1951-1959. (Intervento presentato al convegno 23rd International Conference on Noise and Vibration Engineering 2008, ISMA 2008 tenutosi a Leuven, bel nel 15-17 Settembre 2008).

Predictive maintenance of ball bearings for machines rotating with arbitrary velocity profiles

COCCONCELLI, Marco;SECCHI, Cristian;RUBINI, Riccardo;FANTUZZI, Cesare;
2008

Abstract

Recent research and development on direct–drive motor technology and on their control system push forwardthe application of these devices as electric cams in a large numbers of industrial applications, such as examplemotion control system for packaging machineries. Performances of these devices are much higher than themechanical solutions for machine motion, in terms of precision and operational speed, and, of course, intime required to reconfigure the motion profile.However, classical approaches to the ball bearing diagnosis that use analysis of vibration signals are notlonger applicable, as they have been developed on the hypothesis of drive constant speed. In fact, in mostof the current industrial application, the control system drives the motor to follow a complex and cyclic (i.e.motor shaft reverses its motion direction at each operational cycle) non constant speed motion profile.In those application, even Computed Order Tracking [1] (COT), which is the main fault bearing diagnosistechnique used in non-constant velocity applications, fails to detect incipient faults, as highlighted by Fyfeand Munck in [2].This paper presents a new procedure that modifies the COT to be successfully applicable to the diagnosisproblem of ball bearings in variable speed motion applications.
2008
23rd International Conference on Noise and Vibration Engineering 2008, ISMA 2008
Leuven, bel
15-17 Settembre 2008
4
1951
1959
Cocconcelli, Marco; Secchi, Cristian; Rubini, Riccardo; Fantuzzi, Cesare; Bassi, L.
Predictive maintenance of ball bearings for machines rotating with arbitrary velocity profiles / Cocconcelli, Marco; Secchi, Cristian; Rubini, Riccardo; Fantuzzi, Cesare; Bassi, L.. - ELETTRONICO. - 4:(2008), pp. 1951-1959. (Intervento presentato al convegno 23rd International Conference on Noise and Vibration Engineering 2008, ISMA 2008 tenutosi a Leuven, bel nel 15-17 Settembre 2008).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/604945
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