화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.18, No.5, 1781-1795, September, 2012
DOI10.1016/j.jiec.2012.04.001  Export Citation
Nonlinear MPC of a multi-zone multi-feed LDPE autoclave reactor
Noel C. Jacob, and Ramdhane Dhib†
  • Department of Chemical Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
E-mail:
This paper discusses the design of a model-based multivariable nonlinear model predictive control (NMPC) formulation for the control of a multi-zone multi-feed LDPE autoclave reactor. Unscented Kalman filtering (UKF) state estimation was employed for online estimation of the plant states and disturbances. In addition to structural plant-model mismatch and noisy process measurements, the closed-loop performance of the UKF based NMPC scheme was investigated under parametric uncertainty in the kinetic rate constants. The closed-loop NMPC performance was also assessed for polymer grade changes, and for disturbance rejection at both open-loop stable and unstable operating regions.
Keywords:Nonlinear model predictive control;Unscented Kalman filter;Non-square systems;Polyethylene
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