Development of noise control utilizing piezoelectric technology

The development of piezoelectric noise control technology in recent years,including active noise control,hybrid damping technology,piezoelectric shunting technology and piezoelectric damping composite materials etc,is reviewed.It is revealsed that the method of fluid,solid,sound and electric coupled multi-physics finite element should be further developed.Piezoelectric shunting technology and its combination with some polymer damping materials,or noise attenuation structures,can be effectively used to control low frequency and broad band noise.On piezoelectric damping composite materials,the local resonance of particles should be considered in its mechanism of noise attenuation,and the basic theory needs to be further studied.