A high performance active noise control system for magnetic fields

Pyragius, Tadas; Jensen, Kasper

Abstract

We present a system for active noise control of environmental magnetic fields based on a filtered-x least mean squares algorithm. The system consists of a sensor that detects the ambient field noise and an error sensor that measures the signal of interest contaminated with the noise. These signals are fed to an adaptive algorithm that constructs a physical anti-noise signal canceling the local magnetic field noise. The proposed system achieves a maximum of 35 dB root-mean-square noise suppression in the DC-1 kHz band and 55 and 50 dB amplitude suppression of 50 and 150 Hz AC line noise, respectively, for all three axial directions of the magnetic vector field.

Citation

Pyragius, T., & Jensen, K. (2021). A high performance active noise control system for magnetic fields. Review of Scientific Instruments, 92(12), Article 124702. https://doi.org/10.1063/5.0062650

• Journal Article Type: Article
• Acceptance Date: Nov 8, 2021
• Online Publication Date: Dec 3, 2021
• Publication Date: Dec 1, 2021
• Deposit Date: Dec 21, 2021
• Publicly Available Date: Dec 21, 2021
• Journal: Review of Scientific Instruments
• Print ISSN: 0034-6748
• Electronic ISSN: 1089-7623
• Publisher: AIP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 92
• Issue: 12
• Article Number: 124702
• DOI: https://doi.org/10.1063/5.0062650
• Keywords: Instrumentation
• Public URL: https://nottingham-repository.worktribe.com/output/7054441
• Publisher URL: https://aip.scitation.org/doi/10.1063/5.0062650