CHAI Xiu-li1, GAN Zhi-hua3, ZHAO Jian-jun1. Analysis of influence of AC current intensity on time-domain sensing properties of amorphous ribbon AGMI sensor[J]. 2010, 29(3): 16-18+22.
CHAI Xiu-li1, GAN Zhi-hua3, ZHAO Jian-jun1. Analysis of influence of AC current intensity on time-domain sensing properties of amorphous ribbon AGMI sensor[J]. 2010, 29(3): 16-18+22. DOI: 10.13873/j.1000-97872010.03.017.
Asymmetric giant magnetoimpedance(AGMI) effect can be used to develop high sensitive sensors.The physical model of amorphous ribbon AGMI effect considering three working patterns is presented.Based on Farady’s law and the principle of free energy minimization
sensing model at low frequency is established
and the expression of AGMI sensor output voltage is derived.And the time-domain characteristics of the output voltage on AC current intensity change is numerically calculated and analyzed.The results show that when the AC current intensity is small
the output voltage has first harmonic characteristics
when the intensity is large
the frequency of the voltage mainly has second harmonic characteristics dominates
and intensity amplitude increases with ia2 increasing.The results will play an important guiding role for the development of high performance sensors.