Abstract
A Novel Discrete Internal Model Control Method for Underactuated System
Highlights
The contribution of this article is study of two different control strategies for a class of chemical process industries
To control an under-actuated industrial process demands to know all the characteristic of his model, and to achieve the desired performance when there exist load disturbances. Both Virtual Input and Singular Value Decomposition (SVD) approaches are applied to distillation column process, to prove the controller achievability for this industrial process and that it is the most efficient approach in terms of rapid response, set-point tracking and disturbance rejection
The Virtual Inputs approach avoids the complex calculation, such as calculate the inverse of the matrix, the controller structure is simple, has a few tuning parameters, and is easy to be accepted by operators
Summary
The contribution of this article is study of two different control strategies for a class of chemical process industries. The model of the distillation column used in this plant, which is characterized by an underactuated structure. It is meaningful to develop control methods for this class of systems, and more precisely to develop the most optimized controller design. The control objective for systems characterized by the fact that there are more degrees of freedom than actuators, is to obtain a desirable behavior of several output variables by simultaneously manipulating several inputs channels. Under-actuated systems are less sensitive to modelling errors, so it has to be controlled in its original form to obtain robust stability and performance [1]
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