Impact Factor:7.0

DOI number:10.1109/TIM.2026.3667232

Affiliation of Author(s):仪器科学与光电工程学院

Teaching and Research Group:大科学装置研究院

Journal:IEEE Transactions on Instrumentation and Measurement

Key Words:magnetic shielding; Voltage measurement; Magnetic field measurement; Magnetic shielding; Magnetic fields; Magnetic resonance imaging; Coils; Magnetic noise; Couplings; Magnetic flux; Magnetic hysteresis; Environmental magnetic disturbance suppression; Extremely weak magnetic field measurement; Integral sliding mode control (ISMC); Linear extended state observer (LESO); Three-axis active magnetic compensation (TAMC)

Abstract:The three-axis active magnetic compensation (TAMC) system is widely used to suppress environmental magnetic disturbances in magnetically shielded room (MSR), enabling stable ultra-weak magnetic measurements with reduced cost. Nonlinear, time-varying, and coupled behaviors induced by the shielding material’s magnetic properties pose challenges to accurate modeling and disturbance suppression. A composite control strategy combining linear extended state observer (LESO) with integral sliding mode control (ISMC) is proposed. The LESO is implemented for each axis to provide real-time estimates of e

Co-author:Peiling Cui, Haitao Li, Yangyang Cui, Haifeng Zhang

First Author:Ge Tian

Indexed by:Journal paper

Discipline:工学

First-Level Discipline:Instrumentation Science and Technology

Document Type:J

Volume:75

Page Number:1-9

ISSN No.:0018-9456, 1557-9662

Translation or Not:no

Date of Publication:2026-01-01