Abstract
A calculation system has been developed to predict the noise of some products that use electric motors. This noise prediction system is composed of two main calculation systems; one, which contains both the equivalent electrical circuit of a motor and the finite-element model of the motor structure, obtains the motor excitation force and the other obtains the vibration response of an elastic thin plate excited by the motor and estimates the noise radiated from the thin plate. We demonstrate that the calculated vibration response and noise of the thin plate agree well with measured values.
