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Two observer-based nonlinear control approaches for temperature control of a class of continuous stirred tank reactors

Salehi, S ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ces.2007.09.040
  3. Publisher: 2008
  4. Abstract:
  5. In this paper, two nonlinear observer based controllers for temperature control of a continuous stirred tank reactor in which a special class of parallel exothermic reactions take place are proposed. A reduced order nonlinear observer is constructed to estimate the concentration in the reactor. The observer is coupled with two nonlinear controllers, designed based on two well-known techniques, namely input-output linearization and backstepping for controlling the reactor temperature. For dampening the effect of observer error dynamics, a compensating term is used in each control law. The asymptotical stability of the closed-loop system is shown by the Lyapunov's stability theorem. The effectiveness of the proposed controllers has been demonstrated through computer simulations. © 2007 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Backstepping ; Lyapunov's stability theorem ; Chemical reactors ; Feedback linearization ; Process control ; Temperature control ; Theorem proving
  8. Source: Chemical Engineering Science ; Volume 63, Issue 2 , 2008 , Pages 395-403 ; 00092509 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0009250907007531