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Satellite vibration control using frequency selective feedback

Tan, ACH, Meurers, T, Veres, SM, Aglietti, G and Rogers, E (2003) Satellite vibration control using frequency selective feedback

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This paper addresses the problem of actively attenuating the vibration of plates on satellites. A pure feedback controller is demonstrated which operates at a set of dominant frequencies in a disturbance spectrum, where the control path model is estimated on-line. A new feature of the frequency selective feedback 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 controller is implemented on a test rig to demonstrate the practical feasibility of the method. A disturbance with three rational dominant frequencies is introduced. If FFT were used instead of the frequency estimation method proposed, then a large number of samples would be required to accurately estimate the disturbance frequencies, and, most importantly, FFT-estimated frequencies could lead to an unstable control system due to their granularity. Using the proposed frequency estimation method, the total achieved attenuation is 26dB on the experimental rig.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions : Surrey research (other units)
Authors : Tan, ACH, Meurers, T, Veres, SM, Aglietti, G and Rogers, E
Date : 1 December 2003
Depositing User : Symplectic Elements
Date Deposited : 14 Oct 2016 13:35
Last Modified : 23 Jan 2020 13:18

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