Robust control of microvibrations with experimental verification

Tan, A.C.H., Meurers, T., Veres, S.M., Aglietti, G. and Rogers, E. (2005) Robust control of microvibrations with experimental verification. Proceedings of The Institution of Mechanical Engineers, Part C: Mechanical Engineering Science, 219, (5), 435-460. (doi:10.1243/095440605X16929).


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The paper addresses the problem of actively attenuating a particular class of vibrations, known as microvibrations, which arise, for example, in panels used on satellites. A control scheme which incorporates feedback action is developed which operates at a set of dominant frequencies in a disturbance spectrum, where the control path model is estimated online. Relative to earlier published techniques, a new feature of the presented controller is the use of the inverse Hessian to improve adaptation speed. The control scheme also incorporates a frequency estimation technique to determine the relevant disturbance frequencies with higher precision than the standard fast Fourier transform (FFT). The control scheme is implemented on an experimental test-bed and the total achieved attenuation, as measured from the experiments, is 26dB. The low computational demand of the control scheme allows for single chip controller implementation, a feature which is particularly attractive for potential applications areas, such as small satellites, where there are critical overall weight restrictions to be satisfied whilst delivering high quality overall performance.

Item Type: Article
ISSNs: 0954-4062 (print)
Keywords: microvibrations, active control, robust control, experimental validation
Subjects: Q Science > QC Physics
T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
Faculty of Engineering and the Environment > Engineering Sciences
ePrint ID: 260353
Date Deposited: 21 Jan 2005
Last Modified: 27 Mar 2014 20:03
Further Information:Google Scholar
ISI Citation Count:2

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