Research on Real-Time Measurement Method of Radiated Sound Power for Active Control of Ship Cabin Acoustic Radiation

In the context of active control of acoustic radiation from cabin structures, this paper investigates a real-time measurement method for the radiated sound power on the surface of the cabin, enabling accurate and efficient measurement of the radiated sound power under different excitation conditions. The study constructs both time-domain and frequency-domain simulation models of structural radiated sound power under the acoustical-vibration coupling mode for the cabin structure. By comparing the calculation results of the structural simulation model under different transient excitations with numerical results, the accuracy of the cabin's time-domain and frequency-domain numerical methods is discussed. The results show that the error between the numerical and simulation results of the cabin's structural radiated sound power is within an acceptable range, with some errors less than 1 dB, thus verifying the accuracy of the proposed numerical methods.