Temperature Control of the Batch Polypropylene Reactor by ADRC

Abstract

A new control method called Active-Disturbance Rejection Controller (ADRC) is proposed for temperature control of a batch polypropylene reactor in this paper. This controller is mainly composed of three parts, i.e. "extended state observer" (ESO), input reference signal tracking-differentiator (TD) and a non-linear state error feedback (NLSEF) control law. The simulation results have shown that ADRC can obtain quite good performances with the process uncertain. As the control algorithm in DCS ADRC is developed and tested for a batch polypropylene reactor in a local Petro-Chemical plant. The experiment results have indicated that the controller can give much better dynamic responses than the other control algorithms conducted several years ago.