A single-input two-output feedback formulation for ANC problems
- 1 January 2001
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2 (07431619) , 923-928 vol.2
- https://doi.org/10.1109/acc.2001.945837
Abstract
This paper explores inherent feedback limitations of active noise control in ducts by using a single-input, two-output framework and observing properties of closed-loop transfer functions. Performance is assessed using the plant and disturbance alignment angle. We show that the sound levels at the measurement microphone axe amplified when attenuating acoustic energy at the error microphone. We also show that the stability margins can be improved over feedforward control using measurements from two sensors.Keywords
This publication has 3 references indexed in Scilit:
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- Global Active Noise Control of a One-Dimensional Acoustic Duct Using a Feedback ControllerJournal of Dynamic Systems, Measurement, and Control, 1993