Identification of Non-stationary and Non-linear Drying Processes

This chapter discusses a problem of control of a non-stationary and a non-linear drying process of food raw materials, especially yeast. Industrial yeast drying is a non-stationary and a non-linear process with a transport delay. In this work the identification of the yeast drying process was presented. Models for different time intervals of the closed control system were developed. Changes in the model parameters (non-stationarity) caused deterioration in the stability reserve. The developed models will be used to synthesize the control system in the future.