Control of Multivariable Hammerstein Systems by Using Feedforward Passivation

Publisher:
American Chemical Society
Publication Type:
Journal Article
Citation:
Industrial & Engineering Chemistry Research, 2005, 44 (4), pp. 891 - 899
Issue Date:
2005-01
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This paper presents a new control method for processes which can be described by Hammerstein models. The control design is based on the concept of passive systems. The proposed method is based on feedforward passivation and thus can be applied to nonminimum phase processes and/or processes of high relative degree. A synthesis technique for marginally stable positive real systems has been developed to achieve offset free control. The new control design can be easily implemented by solving a set of linear matrix inequalities. The proposed approach is illustrated using the example of an acid-base pH control problem.
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