Adaptive feedback control using coprime factorization

Mark A. McEver; Daniel G. Cole; Robert L. Clark

doi:10.1117/12.475220

10 July 2002 Adaptive feedback control using coprime factorization

Mark A. McEver, Daniel G. Cole, Robert L. Clark

Proceedings Volume 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control; (2002) https://doi.org/10.1117/12.475220
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

An algorithm is presented which uses adaptive Q-parameterized compensators for control of stable or unstable systems. Internal stability is maintained by forming the compensator out of plant-stabilizing coprime factors, and an on-line gradient descent method adapts the free parameter to minimize the mean squared error between the desired and actual output. The adaptation algorithm is derived for a compensator in the form of a finite impulse response (FIR) filter and a lattice infinite impulse response (IIR) filter. Simulations predict good performance for both tonal and broadband disturbances, and a duct noise control experiment results in a 37 dB tonal reduction.

Citation Download Citation

Mark A. McEver, Daniel G. Cole, and Robert L. Clark "Adaptive feedback control using coprime factorization", Proc. SPIE 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control, (10 July 2002); https://doi.org/10.1117/12.475220

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