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Adaptive control of a flexible beam using least square lattice filtersThis paper presents an indirect adaptive control scheme for the control of flexible structures using recursive least square lattice filters. The identification scheme uses lattice filters which provide an on-line estimate of the number of modes, mode shapes and modal amplitudes. These modes are coupled and a transformation to decouple them in order to obtain the natural modes is presented. The decoupled modal amplitude time series are then used in an equation error identification scheme to identify the model parameters in an autoregressive moving average (ARMA) form. The control is based on modal pole placement scheme with the objective of vibration suppression. The control gains are calculated based on the identified ARMA parameters. Before using the identified parameters for control, detailed testing and validation procedures are carried out on the identified parameters. The full adaptive control scheme is demonstrated using the simulation for the 12 foot free-free beam apparatus at NASA Langley Research Center.
Document ID
19830064881
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sundararajan, N.
(NASA Langley Research Center Hampton, VA, United States)
Montgomery, R. C.
(NASA Langley Research Center Spacecraft Control Branch, Hampton, VA, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1983
Subject Category
Cybernetics
Accession Number
83A46099
Distribution Limits
Public
Copyright
Other

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