TY - GEN
T1 - Decoupling and Disturbance Rejection Method for a Three-Axis Active Magnetic Compensation System Based on DESO-DISMC
AU - Tian, Ge
AU - Zhang, Haifeng
N1 - Publisher Copyright:
© 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - The three-axis active magnetic compensation system suppresses magnetic field disturbances around a magnetically shielded room for ultra-weak magnetic field measurements. However, coupling among control axes increases the complexity of disturbance suppression. To address this issue, a discrete control method is proposed. A decoupling matrix is designed to transform the system into three independent single-input singleoutput subsystems. For each subsystem, a discrete extended state observer is employed to estimate residual coupling and environmental disturbances online, and a discrete integral sliding mode controller is developed to enhance robustness against parameter variations and uncertainties. Experimental results demonstrate that the proposed method effectively suppresses system coupling and environmental disturbances, stabilizing the magnetic field at the MSR center near the zero-field level and satisfying the requirements for ultra-weak magnetic field measurements.
AB - The three-axis active magnetic compensation system suppresses magnetic field disturbances around a magnetically shielded room for ultra-weak magnetic field measurements. However, coupling among control axes increases the complexity of disturbance suppression. To address this issue, a discrete control method is proposed. A decoupling matrix is designed to transform the system into three independent single-input singleoutput subsystems. For each subsystem, a discrete extended state observer is employed to estimate residual coupling and environmental disturbances online, and a discrete integral sliding mode controller is developed to enhance robustness against parameter variations and uncertainties. Experimental results demonstrate that the proposed method effectively suppresses system coupling and environmental disturbances, stabilizing the magnetic field at the MSR center near the zero-field level and satisfying the requirements for ultra-weak magnetic field measurements.
KW - decoupling
KW - discrete extended state observer
KW - discrete integral sliding mode control
KW - environmental magnetic disturbance suppression
KW - threeaxis active magnetic field compensation
KW - ultra-weak magnetic field measurement
UR - https://www.scopus.com/pages/publications/105048341240
U2 - 10.1109/ICCIR70228.2026.11633353
DO - 10.1109/ICCIR70228.2026.11633353
M3 - 会议稿件
AN - SCOPUS:105048341240
T3 - 2026 6th International Conference on Control and Intelligent Robotics, ICCIR 2026
SP - 33
EP - 38
BT - 2026 6th International Conference on Control and Intelligent Robotics, ICCIR 2026
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th International Conference on Control and Intelligent Robotics, ICCIR 2026
Y2 - 26 June 2026 through 28 June 2026
ER -