To improve diagnostic performance, this paper investigates two instantaneous phase quantities: instantaneous power factor (IPF) and instantaneous phase of voltage and current (IPVI) for effectively combining the diagnostic information from both voltage and current measurements. It has shown by an experimental evaluation of oil shortages in a gearbox that the average values of IPF give clear indication of different levels of oil shortages. However, as the dynamic information has been cancelled out largely by the phase subtraction of IPF, it shows less diagnostic information to explain the effect of oil shortages on rotational oscillations of the gearbox. Comparatively, IPVI yields much better diagnostics in separating the oil shortages in wider operating conditions. This mainly because that IPVF is a summation of the two-phase quantities which enhances the signal to noise ratio and consequently the diagnostic performance.
|Title of host publication
|2018 24th IEEE International Conference on Automation and Computing (ICAC)
|Subtitle of host publication
|Improving Productivity through Automation and Computing
|Institute of Electrical and Electronics Engineers Inc.
|Published - 1 Jul 2019
|24th IEEE International Conference on Automation and Computing: Improving Productivity through Automation and Computing - Newcastle University, Newcastle upon Tyne, United Kingdom
Duration: 6 Sep 2018 → 7 Sep 2018
Conference number: 24
https://ieeexplore.ieee.org/xpl/conhome/8742895/proceeding (Website Containing the Proceedings)
http://www.cacsuk.co.uk/index.php/conferences/icac (Link to Conference Information)
|24th IEEE International Conference on Automation and Computing
|Newcastle upon Tyne
|6/09/18 → 7/09/18