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Robust control of microvibrations with experimental verification

Robust control of microvibrations with experimental verification
Robust control of microvibrations with experimental verification
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.
microvibrations, active control, robust control, experimental validation
0954-4062
435-460
Tan, A.C.H.
9dc5855f-02ef-4159-8ece-02afdb9d5eea
Meurers, T.
affec6e8-cd07-4350-ab2c-975071e0c3a2
Veres, S.M.
909c60a0-56a3-4eb6-83e4-d52742ecd304
Aglietti, G.
e44d0dd4-0f71-4399-93d2-b802365cfb9e
Rogers, E.
611b1de0-c505-472e-a03f-c5294c63bb72
Tan, A.C.H.
9dc5855f-02ef-4159-8ece-02afdb9d5eea
Meurers, T.
affec6e8-cd07-4350-ab2c-975071e0c3a2
Veres, S.M.
909c60a0-56a3-4eb6-83e4-d52742ecd304
Aglietti, G.
e44d0dd4-0f71-4399-93d2-b802365cfb9e
Rogers, E.
611b1de0-c505-472e-a03f-c5294c63bb72

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: Journal of Mechanical Engineering Science, 219 (5), 435-460. (doi:10.1243/095440605X16929).

Record type: Article

Abstract

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.

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More information

Published date: 2005
Keywords: microvibrations, active control, robust control, experimental validation
Organisations: Engineering Science Unit, Southampton Wireless Group

Identifiers

Local EPrints ID: 260353
URI: https://eprints.soton.ac.uk/id/eprint/260353
ISSN: 0954-4062
PURE UUID: ec78db6c-1a19-4712-be5a-97e18adabc91
ORCID for E. Rogers: ORCID iD orcid.org/0000-0003-0179-9398

Catalogue record

Date deposited: 21 Jan 2005
Last modified: 20 Jul 2019 01:23

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