On-line neuro-tracking of non-stationary manufacturing processes

Two-phase self-organizing neuro-modeling (SONM), the global SONM and local SONM, is designed for tracking non-stationary manufacturing processes. A radial basis function (RBF) neural network is employed, and a self-tuning estimator is also developed for the determination of RBF network parameters on-line. A pattern recognition approach is presented for identifying a correct RBF neural network, which is used for identifying current manufacturing processes. Experimental results showed that the proposed approach is suitable for tracking non-stationary processes.