Adaptive identification and control of structural dynamics using recursive lattice filters
N. Sundararajan, Raymond C. Montgomery, Jeffrey P. Williams, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Langley Research Center
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985 - Science - 47 pages
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actuator adaptive control method adaptive identification algorithm ARMA model ARMA parameters backward residuals basis functions Bayes risk function coefficients Collection of Technical computations control design control gains control law convergence test damping ratio data-window decoupled modal amplitude discrete Fourier transform Distributed Parameter Systems estimated modal Figure 17 finite-element analysis fit error flexible grid free-free beam grid structure Hence Hilbert space hypothesis identification and control identification method identification results identified parameters Langley Research Center linear locations measurement data measurement vector Modal amplitude spectra modal control forces modal frequencies mode shapes model order model-order Montgomery natural modes nonlinear number of modes on-line order determination order estimate orthonormal basis output PARAMETER IDENTIFICATION predicted presented priori q(fc recursive Recursive Least Squares sampling rate sec Figure selected sensor shown in figure signal Square Lattice STRUCTURAL DYNAMICS SYSTEMS studies Sundararajan system order test fails tests are passed threshold tion updated