BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...
BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...
BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>BULETINUL</strong> <strong>INSTITUTULUI</strong> <strong>POLITEHNIC</strong> <strong>DIN</strong> <strong>IAŞI</strong><br />
Publicat de<br />
<strong>Universitatea</strong> Tehnică „Gheorghe Asachi” din Iaşi<br />
Tomul LVI (LX), Fasc. 2, 2010<br />
Secţia<br />
CONSTRUCŢII DE MAŞINI<br />
SOME NEW RESOURCES ON COMPUTER ASSISTED<br />
EXPERIMENTAL RESEARCH OF THE ABSORBED ELECTRIC<br />
POWER IN MANUFACTURING SYSTEMS<br />
BY<br />
MIHĂIȚĂ HORO<strong>DIN</strong>CĂ<br />
Abstract. This paper presents some theoretical considerations and experimental<br />
results on computer aided research of manufacturing systems (e.g. machine-tools)<br />
using the evolution of the absorbed electric power (EP) of the driving motors. Based<br />
on an original computer aided data acquisition and processing method, the electric<br />
power evolution monitoring (and its components, especially the EP real part) should<br />
be now a very useful tool in experimental research (kinematic chains condition,<br />
working processes loading, and so on). In a new approach the numerical describing<br />
with high resolution of real EP evolution can be used also to evaluate the<br />
performances in dynamic conditions, especially using the evolution in frequency<br />
domain (by power spectral density analysis). Some phenomena in kinematic chains<br />
was observed with a certain scientific priority, using the real EP monitoring<br />
capabilities, such as the behaviour of driving belts and the behaviour of the elastic<br />
system of the rotor on the electric driving motor. The real EP monitoring can be<br />
used to supervise any other electric actuated equipment.<br />
Key words: manufacturing systems, experimental research, real electric power,<br />
computer aided monitoring, data processing.<br />
1. Introduction<br />
The working processes (WP) on manufacturing systems (MS) or any other<br />
working equipment needs mechanical energy, usually delivered by an electric<br />
driving motor (EDM) and transported by a kinematic chain. By mechanical<br />
loading point of view the behaviour of MS is mirrored in the real part of electric<br />
power (EP) evolution (active electric power, AEP). The EDM seems to be a<br />
very appropriate sensor of mechanical loading, useful in MS and WP<br />
monitoring and diagnosis or even in WP active control. The state of the art [2],<br />
[3] indicates that generally for monitoring it is used just the electric current
Change language