Title :
Adaptive rejection of the preponderant harmonic of a pulsed flow
Author :
Micheau, P. ; Coirault, P. ; Hardouin, L. ; Tartarin, J.
Author_Institution :
Lab. d´´Etudes Aerodynamiques, CNRS, Poitiers, France
Abstract :
Pulsed flows, characterized by periodic fluctuations in flow rate, are noise-productive, but an oscillating valve positioned in the exhaust duct can attenuate the main harmonic of pulsed flow. We define a valve adaptive control in the frequency domain implemented by a digital signal processor for experimental purposes. Results show noise reduction at ground level and tracking of process unstationarity
Keywords :
acoustic variables control; active noise control; adaptive control; digital signal processor; exhaust duct; flow rate; frequency domain; harmonic; internal combustion engines; oscillating valve; periodic fluctuations; pulsed flow; Active noise reduction; Adaptive control; Adaptive filters; Feedback; Finite impulse response filter; Frequency; Low-frequency noise; Power harmonic filters; Programmable control; Valves;
Conference_Titel :
Control Applications, 1995., Proceedings of the 4th IEEE Conference on
Conference_Location :
Albany, NY
Print_ISBN :
0-7803-2550-8
DOI :
10.1109/CCA.1995.555915
