Abstract:
Some of the softsensing techniques used for estimating product quality have been discussed in this paper.Among them,the PLS and RBFN algorithms based on statistical analysis and ANN respectively,are proved to be effective in practical application.Having considered their merits and defects,a combined method of PLS and RBFN (named PLSRBFN algorithm) is presented and used for modelling of jet fuel endpoint in hydrocracking fractionator.Generalization results show that the PLSRBFN algonithm gives more accurate prediction and more reliable extrapolation than the pure PLS and RBFN algorithms.