Attenuation of Vibrational Interference -Robust and Adaptive Approaches

Abstract : — Vibration interference appears when the frequency of two vibrations are very close. This generates in addition a low frequency disturbance which absolutely need to be strongly attenuated since its impact can be very damaging on some applications. The paper considers the case of simultaneous vibration interference occurring in two different regions in the frequency domain. The frequency of the vibrations is varying but within a limited frequency range. A feedback approach is considered and two solutions are proposed. The first is a robust linear controller which has been designed taking advantage of the knowledge of the domains of variation of the frequencies of the vibrations. However the performance of the linear controller is somehow limited because of the width of the regions of variation of the frequencies of the vibrations and the robustness constraints. To further improve the performance, a direct adaptive regulation algorithm will be added. The methodology is illustrated by its implementation on a relevant test bench for active vibration control.
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Tudor-Bogdan Airimitoaie, Ioan Doré Landau. Attenuation of Vibrational Interference -Robust and Adaptive Approaches. 15th European Control Conference (ECC 2016), European Control Association, Jun 2016, Aalborg, Denmark. ⟨hal-01394169⟩

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