Parameters Identification and Dynamic Modification of Household Air Conditioning Compressor

The method of experimental modal parameters identification using the complex modal theories is brought forward to analyze the dynamic parameters of the rotary compressor in order to reduce the noise of household electrical products. The compressor shell and the liquid-tank shell could also be dynamic modified so as to keep the compressor in lower noise by these parameters and the result of sound signal analysis in working condition. And the feasibility and efficient of the kind of dynamic modified aiming at lower noise are studied. The experiment indicates that the modified structure has higher damping. The noise degree has been reduced so as to achieve the target of household air conditioner.