Title :
Active control using IIR filters-a second look
Author :
Snyder, Scott D.
Author_Institution :
Dept. of Mech. Eng., Adelaide Univ., SA, Australia
Abstract :
The use of IIR filters in feedforward active noise and vibration control systems is re-examined. It is shown that the commonly-employed filtered-u algorithm may not converge to an error surface minima. Use of a SHARF smoothing filter may enhance the stability of the system in attaining this result, but not improve the result. A novel algorithm is put forward which is shown in simulation to have superior performance
Keywords :
IIR filters; active noise control; digital filters; feedforward; smoothing methods; vibration control; IIR filters; SHARF smoothing filter; algorithm; control systems; feedforward active noise control; feedforward active vibration control; performance; simulation; system stability; Adaptive algorithm; Adaptive filters; Control systems; Delay estimation; Equations; Error correction; Finite impulse response filter; IIR filters; Transfer functions; Vibration control;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389675
