Identification based on T-S fuzzy model for pH neutralization process

In view of the difficult problem of modeling serious nonlinear pH neutralization process, a method of using the GK clustering algorithm and weighted least square method to build the objectpsilas local linear model is discussed. The T-S fuzzy model of the global linear time-varying plant is built through fuzzy weighted combination. So the problem of complicate nonlinear system identification is transformed into the problem of fording a group of simple linear model and itspsila corresponding fuzzy boundary by the method of T-S modeling based on GK clustering algorithm in order to define effective span. The simulation result shows the effectiveness of the clustering method.