MESA LAB IFAC’14 Paper Review (On selected two papers) Zhuo Li MESA LAB MESA (Mechatronics,...
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Transcript of MESA LAB IFAC’14 Paper Review (On selected two papers) Zhuo Li MESA LAB MESA (Mechatronics,...
MESA LAB
IFAC’14 Paper Review(On selected two papers)
Zhuo LiMESA (Mechatronics, Embedded Systems and Automation)LAB
School of Engineering,University of California, Merced
E: [email protected]: CAS Eng 820 (T: 209-228-4398)
Sep 28, 2014. Monday 4:00-6:00 PMApplied Fractional Calculus Workshop Series @ MESA Lab @ UCMerced
MESA LAB
Sessions inline with my research focus
• Industrial Applications of Process Control
• Process Control Applications
• Nonlinear Predictive Control
• Model Predictive Control in Chemical Processes
• Model Predictive Control for Embedded Systems
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AFC Workshop Series @ MESALAB @ UCMerced04/21/2014
MESA LAB
Review candidate• An Industrial Model Based Disturbance Feedback Control Scheme• Feed-forward-feed-back control of an industrial multicomponent distillation column• Fixed-Point Implementation of a Proximal Newton Method for Embedded Model
Predictive Control• Robust Vertical Plasma Stabilization of the future tungsten divertor configuration of Tore
Supra• Optimal DOB Design for Balancing Input / Output Disturbances Response
– Prof.Weidong Zhang
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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Paper I
• Tray temperature measurements is addressed• model-based nonlinear state-feedback robust control problem is addressed• An output feedback PI temperature controller with dynamic feed-forward set-
point compensation and anti-windup protection
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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MESA LAB
Problem description• The n-dimensional open-loop dynamical column system (Luyben, 1990; Baratti et al.,
1998)
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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MESA LAB
The controller design
• FF – feed-forward controller
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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MESA LAB
The controller design
• OF – output feedback
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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MESA LAB
The controller design
• Combine them together
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Conclusion • Improved the performance of the industrial multicomponent distillation column
by upgrading OF temperature control • The upgrade includes:
– retuning the existing control loop and realizing it in IMC form with anti-windup protection– adding a nearly-linear single-load dynamic temperature set-point compensator which amounts to
a PI loop– accompanying the design with conventional-like tuning guidelines underlain by a robust
stability criterion drawn from advanced control theory– enabling a gradual transition from the old to the new control scheme.
04/21/2014 AFC Workshop Series @ MESALAB @ UCMerced
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Problem description
• The closed loop transfer function
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The stability condition
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• Consider: