This work presents a study for monitoring stresses in links of reciprocating machines by means of indirect measurements. A model of such a machine is a slider-crank mechanism actuated by an asynchronous electric motor with reduction gear. For this study, an experimental simulation apparatus was constructed, composed of a reciprocating machine, a direct-current tachometer as diagnostic sensor, and the necessary instrumentation for measurement of loads acting on the slider and thus stresses on the connecting rod. The excellent agreement between the theoretical and experimental results shows the validìty of the solution for monitoring and diagnostics of reciprocating machines using a simple direct-current tachometer connected to an A/D converter and then to a PC able to execute the fast Fourier transforms of the acquired signals. The proposed method is particularly useful when direct measurements of stresses are difficult or particularly laborious. It also allows continuous monìtoring of the machine throughout its !ife time, with user access or denial to computerized information, as desired.

Monitoring and Diagnostics of Stresses in Reciprocating Machines

ANGRILLI, FRANCESCO;BASSO, ROBERTO
1994

Abstract

This work presents a study for monitoring stresses in links of reciprocating machines by means of indirect measurements. A model of such a machine is a slider-crank mechanism actuated by an asynchronous electric motor with reduction gear. For this study, an experimental simulation apparatus was constructed, composed of a reciprocating machine, a direct-current tachometer as diagnostic sensor, and the necessary instrumentation for measurement of loads acting on the slider and thus stresses on the connecting rod. The excellent agreement between the theoretical and experimental results shows the validìty of the solution for monitoring and diagnostics of reciprocating machines using a simple direct-current tachometer connected to an A/D converter and then to a PC able to execute the fast Fourier transforms of the acquired signals. The proposed method is particularly useful when direct measurements of stresses are difficult or particularly laborious. It also allows continuous monìtoring of the machine throughout its !ife time, with user access or denial to computerized information, as desired.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/105489
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact