Abstract
The numerical difficulties associated with high sampling rates have been the main motivation for the recent interest in application of delta-operator formulation in adaptive identification and control techniques, as an alternative to the traditional shift operator. In this article, the derivation of the vector-channel lattice algorithm for least-squares parameter estimation of an input/output model based on the delta operator is presented. Since the vector-channel formulation is a generalization of the standard multichannel forms, results presented here apply to the multichannel lattices as a special case. In addition to the basic derivation, algorithms for residual errors and autoregressive coefficients, a simple example, and issues regarding implementation are discussed.
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G.C. Goodwin, M.E. Salgado, and R.H. Middleton, “Indirect adaptive control: an integrated approach,”Proc. 1988 ACC, Atlanta, Georgia, 1988, pp. 2440–2445.
G.C. Goodwin and K.S. Sin,Adaptive Filtering, Prediction and Control. Prentice-Hall: Englewood Hills, NJ, 1984.
F. Jabbari and J.S. Gibson, “Vector channel lattice filters and identification of flexible structures,”IEEE Trans. Autom. Control, vol. 33, no. 5, pp. 448–456, 1988.
F. Jabbari, “Lattice filters for RLS estimation of a delta operator based model,”IEEE Trans. Autom. Control, vol. 36, no. 7, pp. 869–875, 1991.
R.H. Middleton and G.C. Goodwin, “Improved finite word length characteristics in digital control using delta operators,”IEEE Trans. Autom. Control, vol. 31, no. 11, pp. 1015–1021, 1986.
R.H. Middleton and G.C. Goodwin,Digital Estimation and Control: A Unified Approach. Prentice-Hall: Englewood Hills, NJ, 1989.
M.D. Roesler and F. Jabbari, “Results in identification of a flexible structure using lattice filters,”AIAA J. Guidance Control Dynamics, vol. 14, no. 4, pp. 857–860, 1991.
D.M. Wiberg, “Frequencies of vibration estimated by lattices,”J. Astronaut. Sci. vol. 33, no. 1, pp. 35–47, 1985.
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Editor: H. Stalford
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Jabbari, F. Vector-channel lattice filters for the delta operator: Complete derivation. Dynamics and Control 2, 113–129 (1992). https://doi.org/10.1007/BF02169493
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DOI: https://doi.org/10.1007/BF02169493