Design of shunt loudspeaker by using the pole placement method
LIU Weiwei1，MAO Qibo1,2
1. School of Aircraft Engineering, Nanchang Hangkong University, Jiangxi Nanchang, 330063, China
2.School of Mechanical Engineering, Yangzhou University, Jiangsu Yangzhou, 225127, China
Abstract：The shunt loudspeaker is imposed to control the duct noise.The shunt circuit of the loudspeaker was optimized by using the pole placement method.First, the duct-loudspeaker coupling model as well as the shunt loudspeaker model was built up.Then the characteristic equation of the shunt loudspeaker control system pole was obtained.Considering dominant pole feature, the optimal parameters value of resistances and inductances were obtained.Meanwhile, the location of the shunt loudspeaker effect on the control performance was discussed in detail, and the optimal shunt loudspeaker locations for different target modes were presented.Finally, the duct noise control using shunt loudspeaker was experimentally verified.The numerial and experimental results show that the parameters of shunt loudspeaker circuit can be optimized by using the pole placement method.
柳维玮1，毛崎波1,2. 通过极点配置方法设计分流扬声器[J]. 振动与冲击, 2018, 37(24): 80-84.
LIU Weiwei1，MAO Qibo1,2. Design of shunt loudspeaker by using the pole placement method. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(24): 80-84.
[1] 史东伟, 冯声振, 邱小军. 有源吸声尖劈的实验研究[J]. 声学技术, 2009, 28(6): 773-777.
SHI Dongwei, FEI Shengzhen, QIU Xiaojun. Experimetal study of active acoustic wedge[J]. Technical Acoustics, 2009, 28(6): 773-777.
[2] Zhang Y, Chan Y, Huang L. Thin broadband noise absorption through acoustic reactance control by electro-mechanical coupling without sensor[J]. The Journal of the Acoustical Society of America, 2014, 135(5): 2738-2745.
[3] Tao J, Jiao Q, Qiu X. Sound absorption of a finite micro-perforated panel backed by a shunted loudspeaker[J]. The Journal of the Acoustical Society of America 2014, 135(1): 231-238.
[4] Tao J, Jiao Q, Qiu X. A composite sound absorber with micro-perforated panel and shunted loudspeaker[C]// Proceedings of Meetings on Acoustics. Acoustical Society of America, 2013, 19(1): 015068.
[5] Fleming A J, Niederberger D, Moheimani S O R, et al. Control of resonant acoustic sound fields by electrical shunting of a loudspeaker[J]. Control Systems Technology, IEEE Transactions on, 2007, 15(4): 689-703.
[6] Lissek H, Boulandet R. Design of shunt electric networks in view of sound absorption with loudspeakers[C]// Forum Acusticum. OAI, 2011.
[7] Rivet E, Boulandet R, Lissek H. Optimization of electroacoustic resonators for semi-active room equalization in the low-frequency range[J]. Journal of the Acoustical Society of America, 2013, 133(5):3348.
[8] Černík M, Mokrý P. Sound reflection in an acoustic impedance tube terminated with a loudspeaker shunted by a negative impedance converter[J]. Smart Materials and Structures, 2012, 21(11): 115016.
[9] Lissek H. Electroacoustic metamaterials: achieving negative acoustic properties with shunt loudspeakers[C]// Proceedings of Meetings on Acoustics. Acoustical Society of America, 2013, 19(1): 030023.
[10] Pietrzko S, MAO Q. Noise reduction in a duct using passive/semiactive shunt loudspeakers[C]// The 16th International Congress on Sound and Vibration, Kraków, Poland. 2009: 5-9.
[11] Boulandet R, Lissek H. Toward broadband electroacoustic resonators through optimized feedback control strategies[J]. Journal of Sound & Vibration, 2014, 333(20):4810-4825.
[12] Hagood N W, Flotow A V. Damping of structural vibrations with piezoelectric materials and passive electrical networks[J]. Journal of Sound & Vibration, 1991, 146(2):243-268.
