Solutions for nonlinear multivariable processes control

  • Authors:
  • Lupu Ciprian;Popescu Dumitru;Udrea Andreea;Dimon Catalin

  • Affiliations:
  • Automatics and Computer Science, Politehnica University of Bucharest, Romania;Automatics and Computer Science, Politehnica University of Bucharest, Romania;Automatics and Computer Science, Politehnica University of Bucharest, Romania;Automatics and Computer Science, Politehnica University of Bucharest, Romania

  • Venue:
  • WSEAS Transactions on Systems and Control
  • Year:
  • 2008

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Abstract

The paper proposes a combined feedforward and feedback control scheme with nonlinear compensators as a solution for multivariable nonlinear processes. This is developed based on classic decentralized control approach for multivariable processes. The design methods for each structure's component are presented. These are based on experimental tests, classic identification and closed loop pole placement methods. The proposed method is compared to the classic solutions given by the decentralized and static decoupling procedures. An analysis on the advantages and the disadvantages of the proposed structure was made. To solve the disadvantages there have been proposed two additional structures. The applicability of the proposed method and of the two classic methods is proved using a real-time structure based on a RST control algorithm. In the end, its software implementation and the obtained results are also showed and commented.