公开(公告)号：US11961648B2

公开(公告)日：2024-04-16

申请号：US17541903

申请日：2021-12-03

Applicant: Beijing University of Technology

Inventor： Jian Tang ,  Zhe Xu ,  Pengsheng Li ,  Xiaoge Liu

IPC: H01F13/00 ,  G01R33/02

CPC classification number: H01F13/006 ,  G01R33/02

Abstract: A rapid demagnetization method based on characteristics of magnetic media. In the method, basic information is obtained by a recognition module of magnetic media by means of multi-source sensing collaboration. The magnetic medium is identified by using a data processing technology and a magnetic medium identification algorithm, and then the characteristic information is extracted. Optimized set values of demagnetization parameters are obtained by a demagnetization parameter optimizing and setting module based on a demagnetization optimizing model. Demagnetization parameter set values are tracked by a closed-loop control module of a demagnetization magnetic field in combination with domain expert knowledge by using a closed-loop control mechanism integrated with a magnetic field control algorithm, a charging-discharging device, a magnetic field generating device, a magnetic field sensor and an environmental sensor, completing the rapid demagnetization of the magnetic medium.