Optimal transition and robust control design for exothermic continuous reactors

Control of Continuous Reactors With Non-Monotonic Reaction Rate

“…that yields exponentially convergent estimates, with adjustable (or fixed) rate T / T (or ) for the reaction rate (or concentration) (Flores, et al, 2005;Gonzalez and Alvarez, 2005) r…”

“…This controller has been employed to track an optimal transition between two open-loop steadystates, in a reactor of class (1) with monotonic reaction rate (Flores, et al, 2005). It must be pointed out that: (i) the implementation of the preceding output-feedback controller does not need the reaction rate function (c, T, p), (ii) the temperature controller (9,10,11) is linear and can be realized as the combination of a linear PI controller with a filter (Gonzalez and , and (iii) the concentration controller is basically a material balance-based ratio control component that sets proportionally tor (Gonzalez and .…”

“…Thus, the corresponding nonlocal control redesign problem amounts to redesigning the concentration estimation to exploit the far-from equilibrium innovation capability. In principle, two estimator approaches can be employed to perform the joint reaction rate-concentration estimation task: (i) the Luenberguer-like geometric estimator (GE) (Alvarez, 2000), and (ii) the extended Kalman filter (EKF) (Jazwinski, 1970) (Gelb, et al, 1974).…”

Robust controller design for a heat exchanger using ℋ2, ℋ∞, ℋ2/ℋ∞, and μ-synthesis approaches

“…Effective control of heat exchangers requires the application of some advanced methods, e.g. robust control (Gerhard et al, 2004;Tlacuahuac et al, 2005). Robust control has emerged as one of the most important areas in the modern control design since Doyle (1981), Zames (1983), and many others.…”

Simulation Of Robust Stabilization Of A Chemical Reactor

“…Conventional control strategies, which are often used for reactor control design, can fail for such complicated systems and their effective control requires application some of advanced methods, as e. g. adaptive control (Vojtesek and Dostal, 2008), predictive control (Figueroa et al, 2007), robust control (Alvarez-Ramirez and Femat, 1999), (Gerhard et al, 2004), (Bakošová et al, 2005), (Tlacuahuac et al, 2005) and others.…”