ABSTRACT
In industry production,there are a lots process parameters,which are close relating to production efficiency and quality of products,need containing. However,for the reasons of techniques,craftwork and economy,these parameters are not able to be measured by usual ways. Recently,being a new solution to this problem,soft sensor technology has developed quickly. But establish the soft measured model with the nerve network, compare the advantage that other method have got and can't compare to, in recent years, along with technological advance, appeared the soft diagraph method of the combinative other method in network in nerve again.
The deckle beats to starch the process inside wet heavy can't on-line examination, but its with beat to starch the process the inside can measure directly of a few amount of physicses has certainly of to should relate to, these physicses measures is to beat to starch the discharge P and beat to starch the density C and beat to starch the electric current respectively, with original and wet heavy worth g0, they with wet heavy an esse complicated but certain relation. Because the wet heavy g is complicated with I, C, P, etc. of g0 several amount offs a relation, landing is hard to use line or cent a line relations mean, but nerve network for generally and not the line function has arbitrarily the accuracy approaches the ability, so can use the nerve network to mean wet heavy wait with density the relation of several amount offs. This lesson a construction for main analysis research BP nerve network with calculate way. The soft measurement model of the beating degree which is based on BP neural network is built. The model has acquired better effect in the control of process and optimization.
KEY WORDS: soft sensing, BP neural network, pulp process, pulp