Jl. Vanniekerk et Bh. Tongue, ACTIVE CONTROL OF A CIRCULAR MEMBRANE TO REDUCE TRANSIENT NOISE TRANSMISSION, Journal of vibration and acoustics, 117(3), 1995, pp. 252-258
An active control approach that reduces transient noise transmission t
hrough a membrane in a circular duct is presented. Discrete sections o
f piezo-electrical film, PVDF, are used os actuators to adjust the ten
sion of the membrane. Different control strategies, such as optimal, s
liding mode and velocity feedback control, are investigated analytical
ly and then implemented experimentally. It is shown that velocity feed
back control is the more effective, stable controller for this applica
tion.