Characterization of rotor imbalance using MEMS accelerometers

Mehanske vibracije so nosilec informacij dinamičnega stanja merjenih strojnih elementov. Poleg zahtevne analize izmerjenih rezultatov je razlog za omejeno izvajanje meritev tudi draga merilna oprema. V sklopu naloge smo želeli ugotoviti, če je mogoče merilno napravo za merjenje vibracij in izvajanje balansiranja rotorjev izdelati iz komponent nižjega cenovnega razreda. Naprava služi zajemu časovnega signala pospeška, ki ga nato procesiramo z programsko kodo, napisano v programskem jeziku Python. Napravo smo umerili ter diagnosticirali in uspešno izvedli balansiranje testnega rotorja.Mechanical vibration carries the information, describing dynamic state of measured elements. Besides the complicated analysis of measurement results, the main reason for limited possibilities of measuring dynamic response is the high cost of required equipment. Our objective is to examine the possibility of constructing a low-cost measuring device to perform vibration monitoring and rotor balancing. The device captures acceleration in time domain, the signal is then processed through a code compiled using Python programming language. Based on the calibration of the device we have successfully diagnosed imbalance and performed balancing of a test rotor