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Theory and experiment research for ultra-low frequency maglev vibration sensor.
Rev Sci Instrum 2015; 86(10):105001RS

Abstract

A new maglev sensor is proposed to measure ultra-low frequency (ULF) vibration, which uses hybrid-magnet levitation structure with electromagnets and permanent magnets as the supporting component, rather than the conventional spring structure of magnetoelectric vibration sensor. Since the lower measurement limit needs to be reduced, the equivalent bearing stiffness coefficient and the equivalent damping coefficient are adjusted by the sensitivity unit structure of the sensor and the closed-loop control system, which realizes both the closed-loop control and the solving algorithms. A simple sensor experimental platform is then assembled based on a digital hardware system, and experimental results demonstrate that the lower measurement limit of the sensor is increased to 0.2 Hz under these experimental conditions, indicating promising results of the maglev sensor for ULF vibration measurements.

Authors+Show Affiliations

School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.Laser Medicine Laboratory, Institute of Biomedical Engineering, Chinese Academy of medical Sciences and Peking Union Medical College, Tianjin 300192, China.School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26520975

Citation

Zheng, Dezhi, et al. "Theory and Experiment Research for Ultra-low Frequency Maglev Vibration Sensor." The Review of Scientific Instruments, vol. 86, no. 10, 2015, p. 105001.
Zheng D, Liu Y, Guo Z, et al. Theory and experiment research for ultra-low frequency maglev vibration sensor. Rev Sci Instrum. 2015;86(10):105001.
Zheng, D., Liu, Y., Guo, Z., Zhao, X., & Fan, S. (2015). Theory and experiment research for ultra-low frequency maglev vibration sensor. The Review of Scientific Instruments, 86(10), p. 105001. doi:10.1063/1.4931692.
Zheng D, et al. Theory and Experiment Research for Ultra-low Frequency Maglev Vibration Sensor. Rev Sci Instrum. 2015;86(10):105001. PubMed PMID: 26520975.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Theory and experiment research for ultra-low frequency maglev vibration sensor. AU - Zheng,Dezhi, AU - Liu,Yixuan, AU - Guo,Zhanshe, AU - Zhao,Xiaomeng, AU - Fan,Shangchun, PY - 2015/11/2/entrez PY - 2015/11/2/pubmed PY - 2016/8/12/medline SP - 105001 EP - 105001 JF - The Review of scientific instruments JO - Rev Sci Instrum VL - 86 IS - 10 N2 - A new maglev sensor is proposed to measure ultra-low frequency (ULF) vibration, which uses hybrid-magnet levitation structure with electromagnets and permanent magnets as the supporting component, rather than the conventional spring structure of magnetoelectric vibration sensor. Since the lower measurement limit needs to be reduced, the equivalent bearing stiffness coefficient and the equivalent damping coefficient are adjusted by the sensitivity unit structure of the sensor and the closed-loop control system, which realizes both the closed-loop control and the solving algorithms. A simple sensor experimental platform is then assembled based on a digital hardware system, and experimental results demonstrate that the lower measurement limit of the sensor is increased to 0.2 Hz under these experimental conditions, indicating promising results of the maglev sensor for ULF vibration measurements. SN - 1089-7623 UR - https://www.unboundmedicine.com/medline/citation/26520975/Theory_and_experiment_research_for_ultra_low_frequency_maglev_vibration_sensor_ L2 - https://dx.doi.org/10.1063/1.4931692 DB - PRIME DP - Unbound Medicine ER -