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Vibration analysis is one of the most successful techniques used for condition monitoring of induction motors. The efficiency of this technique for diagnosing electromagnetic problems in the motor depends on the ability to analyse vibration data. The aim of this presentation is to clarify the origin of the motor vibration at twice line frequency based on the classical theory of electromagnetic vibration,...
Optymalizacja procesów utrzymania ruchu, czyli podnoszenie niezawodności urządzeń przy równoczesnej redukcji kosztów, wymagają współpracy i wsparcia ze strony producentów maszyn i ich centrów serwisowych. Efektywność tej współpracy może zostać znacznie poprawiona dzięki systemom diagnostycznym oraz umożliwieniu zdalnej współpracy, pozwalającej na łatwy dostęp do wiedzy i doświadczeń specjalistów....
Vibration analysis is one of the most successful techniques used for condition monitoring of rotating machines. The aim of this presentation is to show that vibration analysis is a very efficient and convenient tool for diagnosing mechanical and electromagnetic problems in induction motors. This presentation is based on thirty-five years of the author's experience in the field of vibration motor diagnostics...
The equipment of the internal combustion engine unit includes the group of rotating machinery, such as the alternator, coolant pump, power steering pump or belt tensioner roller. Torque from the engine crankshaft to the individual elements of equipment is most often transmitted through the belt transmission. In most modern car engine the belt (toothed or wedge) is used to transmit simultaneously drive...
The most bearings diagnosis methodologies has been designed typically by means of vibration analysis, but a numerous studies in the last years are focused in non-invasive techniques Motor Current Signature Analysis (MCSA) based. This paper shows two different methodologies for bearings diagnosis over induction motors by means of the stator Common Mode Current (CMC). It is acquired directly the CMC...
Appliance manufacturing companies more often ask for an automatic on-line inspection system to accurately monitor the characteristics of all their products. It is well known that vibration tests enable discrimination between good and faulty products and hence the analysis of the vibration signals can be used for quality control of household appliances on the production lines. Laser Doppler Vibrometry...
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