Model Study of Mass Estimation of Loo se Parts in PWRs Using Pattern Recognition

A new mathematics model was proposed based on the pattern recognition(PR)and neural network(NN)theories to estimate the masses of lo ose parts(LPs )in PWRs.The features existed in the i m- pact signals were extracted using th e PR technique.The compressed featu re space's dimensions can be much fewer than the original ones.Then th e learning procedure of NN can realiz e estimating the masses of LPs.The experiments carried out on t he simulator of reactor pressure vessel show that the model could be used to depict the complicated relationship between the mass and the impact information of LPs in NPPs.The measured precision can be h igh.And the realizing procedure is a lso simple.The mathematics model supplies a new solution for the mass estimation of LPs.