Nonlinear observer of crystal‐size distribution during batch crystallization

摘要: A high-gain observer was designed to estimate the crystal-size distribution (CSD) in batch crystallization processes. The is based on discretization of population balance equations describing evolution CSD using finite difference method. Due process impurities and other batch-to-batch variations, kinetic parameters involved dynamic model crystallization, relating primary secondary nucleation particular, are subject significant variations. In order avoid any estimation divergence, an on-line parameter identification algorithm added observer. Assuming that measurements nuclei particles available, shown provide a discretized reconstruction entire which can be used for control purposes or supervision. © 2006 American Institute Chemical Engineers AIChE J,