N2 - The active noise-reducing casing developed and promoted by the authors in recent publications have multiple advantages over other active noise control methods. When compared to classical solutions, it allows for obtaining global reduction of noise generated by a device enclosed in the casing. Moreover, the system does not require loudspeakers, and much smaller actuators attached to the casing walls are used instead. In turn, when compared to passive casings, the walls can be made thinner, lighter and with much better thermal transfer than sound-absorbing materials. For active noise control a feedforward structure is usually used. However, it requires an in-advance reference signal, which can be difficult to be acquired for some applications. Fortunately, usually the dominant noise components are due to rotational operations of the enclosed device parts, and thus they are tonal and multitonal. Therefore, it can be adequately predicted and the Internal Model Control structure can be used to benefit from algorithms well developed for feedforward systems. The authors have already tested that approach for a rigid casing, where interaction of the walls was significantly reduced. In this paper the idea is further explored and applied for a light-weight casing, more frequently met in practice, where each vibrating wall of the casing influences all the other walls. The system is verified in laboratory experiments. L1 - http://journals.pan.pl/Content/101353/PDF/aoa-2016-0032.pdf L2 - http://journals.pan.pl/Content/101353 PY - 2016 IS - No 2 EP - 322 DO - 10.1515/aoa-2016-0032 KW - active noise-vibration control KW - active structural acoustic control KW - active casing KW - Internal Model Control A1 - Mazur, Krzysztof A1 - Pawełczyk, Marek PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 41 DA - 2016 T1 - Internal Model Control for a Light-Weight Active Noise-Reducing Casing SP - 315 UR - http://journals.pan.pl/dlibra/publication/edition/101353 T2 - Archives of Acoustics