A Benchmark of Model-based Precise Temperature Control Design for an Industrial Batch Cooling Crystallization Process

Abstract

This paper provides a benchmark of model-based design method for temperature control of an industrial batch-cooling crystallizer. In order to control the crystallization temperature precisely, a process-model-based approach is employed for designing the control system. The designed control system is comprised of the PI-D cascade control with the feed-forward compensation. The derived PID settings formula is extremely suitable for tracking to the ramp set-point change. In addition, by partially slow down the set-point trajectory, the undershoot error of the temperature control can be significantly reduced. The simulation results of the designed control system shows superior control performance and proper applicability.