Abstract
In this paper, the analytical model is developed for active minimization of interior noise within a three-dimensional car cabin enclosure using distributed piezoelectric actuators. Two issures about the interior noise active control are discussed. One is the modeling technique. Modal synthesis method is used to establish the governing motion equations of the fully coupled acoustics-structure-piezoelectric patch system using modal frequencies, damping and mode shapes of a structural and an acoustical system which appear in the frequency range of interest. The second issue is the optimization of peizo actuator's positions. A new response surface methodology MPOD (most probable optimal design) based on holographic neural network, proposed by the authors is applied to solve the global optimal positions of piezoelectric patches. Numerical investigations to the effect of different number of actuators, error sensors as well as disturbing point forces on SPLs are presented.
