Open AccessExperimental study of a lock-in phenomenon in the case of a mechanical oscillator flowmeter
Author(s) -
Maciej Szudarek,
M. Turkowski
Publication year - 2020
Publication title -
mechanik
Language(s) - English
Resource type - Journals
ISSN - 0025-6552
DOI - 10.17814/mechanik.2020.7.13
Subject(s) - harmonics , subharmonic , lock (firearm) , oscillation (cell signaling) , natural frequency , acoustics , amplitude , mechanics , physics , pulsatile flow , control theory (sociology) , optics , engineering , vibration , computer science , mechanical engineering , nonlinear system , chemistry , medicine , control (management) , quantum mechanics , voltage , artificial intelligence , cardiology , biochemistry
Oscillatory flowmeters are susceptible to pulsatile flow and mechanical oscillator flowmeters are no exception. The experimental study was conducted to determine possible measurement errors for specific pulsation amplitude thresholds. The study verified that no frequency lock-in takes place for pulsation frequencies which are subharmonics of the natural oscillation frequency, nor for harmonics higher than the 2nd.