Open AccessPinched hysteresis loops and symmetry
Author(s) -
Wang XiaoMeng,
Hui ShuYuen Ron
Publication year - 2017
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2016.0301
Subject(s) - symmetry (geometry) , reflection symmetry , level crossing , oscilloscope , physics , optics , computer science , mathematics , engineering , geometry , detector , mechanical engineering
Pinched hysteresis loops (PHLs) can be clockwise, counter‐clockwise, self‐crossing and non‐self‐crossing. While it is difficult to differentiate these features from the measured PHLs on the oscilloscope, this study shows that PHL exhibits different forms of symmetry. Self‐crossing PHLs display reflection symmetry and non‐self‐crossing ones display point symmetry. These features are confirmed with practical measurements based on the memristor characteristics of Hewlett‐Packard (self‐crossing) and of a discharge lamp (non‐self‐crossing). It is shown that the symmetry graph is a useful tool to identify the features of PHLs.