Design of shunt loudspeaker by using the pole placement method

作者：Liu Weiwei; Mao Qibo

来源：Journal of Vibration and Shock, 2018, 37(24): 80-84.

DOI：10.13465/j.cnki.jvs.2018.24.013

• Characteristic equation
• Control performance
• Coupling modeling
• Dominant poles
• Duct noise controls
• Optimal parameter
• Optimal values
• Pole placement methods

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.

• 出版日期2018
• 单位南昌航空大学