Mu-optimal L V-control of Distillation Columns
نویسنده
چکیده
Two-point composition control using the LY-configuration is examined. In spite of high steady-state RGA-values it is shown for seven example columns that the LY-configuration may yield acceptable robust performance using single-loop controllers provided measurement delays are not too large. In order to investigate the level of modelling detail that is required for effective control, five process models of different complexity are studied. It is demonstrated that flow dynamics should he included in a column model which is to be used for controller design. The structured singular value (Mu or p) is used as a robust performance index. To use this index one must define performance using the N, framework. The issue of selection of performance and uncertainty weights is critical in this procedure, and is discussed in detail in the paper.
منابع مشابه
A Survey for the Selection of Control Structure for Distillation Columns Based on Steady State Controllability Indexes
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