@inproceedings{9f29fb585fc549c89f8edbd043286cd9,
title = "Harmonic Suppression of Ultralow-frequency Standard Vibration based on Iterative Learning Control",
abstract = "Calibration of ultra-low frequency (ULF) vibration is of great significance and degree of difficulty, because the maximum amplitude of acceleration produced by electromagnetic standard vibration exciters is limited by stroke and decreases with vibration frequency by 12 dB/Oct. Therefore, the signal to noise ratio decreases correspondingly and harmonic distortion of ULF standard vibration becomes a challenging problem to be solved. A harmonic suppression method based on iterative learning is proposed in this paper. The system characteristics of ULF standard vibration exciters are studied, a PD-type iterative learning control method based on displacement feedback is introduced to eliminate disturbances by PD control and suppress repetitive disturbance moments by iterative learning, thus to effectively improve the signal-to-noise ratio and accuracy of ULF standard vibration waveforms. Simulation results show that this method can effectively reduce the tracking error of the system, and harmonic distortion of acceleration waveform is reduced from 1\% to 0.03\% after four times of iteration.",
keywords = "Harmonic distortion, Iterative learning control, Suppress, Ultralow-frequency vibration",
author = "Wei Li and Junning Cui and Limin Zou",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021 ; Conference date: 29-10-2021 Through 31-10-2021",
year = "2021",
doi = "10.1109/ICEMI52946.2021.9679558",
language = "英语",
series = "2021 15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "370--373",
editor = "Wu Juan and Yin Jiali",
booktitle = "2021 15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021",
address = "美国",
}