Identification of the Heating Process in Differential Scanning Calorimeter with the Use of Hammerstein Model

Differential thermal analysis method and appropriate heating model are presented. Next, the general description of designed and constructed device (by Authors) - Differential Scanning Calorimeter (DSC) is given. It is used to determine some thermal properties of physical modern materials (i.e. glass/softening temperature in chalcogenide glasses). Modeling of heating process with non-linear properties, observed in device, required in thermal analysis is considered in this paper, where a block Hammerstein structure is selected to describe both dynamic and non-linear properties of phenomenon. A parametric identification method with least squares and SVD decomposition approaches is proposed. The chosen method has been experimentally tested and numerically compared with the linear (FIR) model for real data.