چكيده به لاتين
In this thesis , first , using the H. Yoo and C. Pierre theory, the governing vibrational equations of a rotating plate are extracted with a single mass . by specifying the governing equations on the set , the effect of the amount and location of the mass on the natural frequencies of the system and modal properties are studied . then , with the formation of a suitable database , a model is presented for the prediction of the amount and location of the proposed mass . in the next step , by employing piezoelectric patch , the governing equations on the rotating plate are extracted . by designing the model governing this smart system , by excitation of a cantilever beam at each moment , the response of the system in another patch is obtained to calculate the natural frequencies and modal parameters of the rotating plate . by calculating the natural frequency of the system and employing the presented model in the first part of the project location and the amount of the generated mass in the rotary blades , it is compared with its actual value . the obtained results show that the proposed method is able to predict potential uncertainties in the rotating system without stopping the set at any time , which can greatly reduce the cost of monitoring and failure in these systems .
