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Design of a hybrid controller for pressure swing adsorption processes

Fakhroleslam, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1109/TCST.2018.2841384
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2018
  4. Abstract:
  5. The aim of this paper is to synthesize a hybrid controller for pressure swing adsorption (PSA) processes. Since the process is described by a set of partial differential algebraic equations, first a local reduced-order model (LROM) for the process is developed and is formalized as a hybrid system. A hybrid controller is designed for purity control of the process in the presence of external disturbances by determining the maximal safe set of the LROM. A hybrid backward reachability analysis is performed for this purpose. Considering a realistic scenario for PSA processes where the states are not available and the number of measurement sensors is very limited, the desired states are estimated by using a hybrid observer. The controller is designed and applied to a two-bed, six-step PSA process whose dynamical behavior is simulated by a full-order principle-based model of the process. An excellent performance of the controller is obtained. IEEE
  6. Keywords:
  7. Computational modeling ; Mathematical model ; Pressure swing adsorption (PSA) ; Safety ; Valves ; Accident prevention ; Adsorption ; Controllers ; Differential equations ; Hybrid systems ; Mathematical models ; Safety valves ; Valves (mechanical) ; Backward reachability ; Computational model ; External disturbances ; Partial differential-algebraic equations ; Pressure swing adsorption ; Reachability analysis ; Reduced order models ; Safety problems ; Process control
  8. Source: IEEE Transactions on Control Systems Technology ; 2018 ; 10636536 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/8392789