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Active Noise Control In a Cylindrical Cavity

원통형 밀폐공간 내부의 능동소음제어

  • Published : 2000.09.01

Abstract

An active control of the transmission of noise through an aircraft fuselage is investigated numerically. A cylinder-cavity system was used as a model for this study. The fuselage is modeled as a fi nite, thin shel cylinder with constant thickness. The sound field generated by an exterior monopole source is transmitted into the cavity through the cylinder. Point force actuators on the cylinder are driven by error sensor that is placed in 3D cavity. Modal coupling theory is used to formulate the numerical models and describe the system behavior. Minimization of the acoustic potential energy in the fuselage is carried out as a performance index. Continuous parameter genetic algorithm is used to search the optimal actuator position and both results are compared.

Keywords

Cavity;Modal Coupling Theory;Acoustic Potential Energy;Continuous Parameter Genetic Algorithm

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