Title :
Accounting for the control actuator layer in economic model predictive control of nonlinear processes
Author :
Durand, Helen ; Ellis, Matthew ; Christofides, Panagiotis D.
Author_Institution :
Dept. of Chem. & Biomol. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
In the present work, an economic model predictive control (EMPC) system is designed that accounts for the dynamics of the control actuators. A combined process-actuator dynamic model is developed to describe the process and control actuator dynamics and is used within the EMPC system. Stability constraints, designed via Lyapunov-based techniques, are imposed on the EMPC problem to guarantee closed-loop stability of the process system under the EMPC. An EMPC system accounting for the control actuator dynamics is applied to a benchmark chemical process example to study the impact of the actuator dynamics on closed-loop economic performance and reactant material constraint satisfaction.
Keywords :
Lyapunov methods; actuators; closed loop systems; control system synthesis; nonlinear control systems; predictive control; stability; EMPC system; Lyapunov-based techniques; chemical process; closed-loop economic performance; closed-loop stability; control actuator layer; control actuators dynamics; economic model predictive control; nonlinear processes; process system; process-actuator dynamic model; reactant material constraint satisfaction; stability constraints; Actuators; Economics; Inductors; Process control; Stability analysis; Trajectory; Tuning;
Conference_Titel :
American Control Conference (ACC), 2015
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4799-8685-9
DOI :
10.1109/ACC.2015.7171186
