Robust Control of a Distillation Column

  • Da-Wei Gu
  • Petko H. Petkov
  • Mihail M. Konstantinov
Part of the Advanced Textbooks in Control and Signal Processing book series (C&SP)

Abstract

In this chapter we present the design of a robust control system for a high-purity distillation column. The original nonlinear model of the column is of high order and it includes parametric gain and time-delay uncertainty. A low-order linearized distillation column model is used in the design of a 1-degree-of-freedom \(\mathcal{H}_{\infty}\) loop-shaping controller and a 2-degree-of-freedom (2DOF) μ-controller. Both controllers ensure robust stability of the closed-loop system and fulfillment of a mixture of time-domain and frequency-domain specifications. A reduced order μ-controller is then found that preserves the robust stability and robust performance of the closed-loop system. The simulation of the closed-loop system with the nonlinear distillation column model shows very good performance for different reference and disturbance signals as well as for different values of the uncertain parameters.

Keywords

Attenuation Boiling Settling Tray Cola 

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  • Da-Wei Gu
    • 1
  • Petko H. Petkov
    • 2
  • Mihail M. Konstantinov
    • 3
  1. 1.Department of EngineeringUniversity of LeicesterLeicesterUK
  2. 2.Department of AutomaticsTechnical University of SofiaSofiaBulgaria
  3. 3.Civil Engineering and GeodesyUniversity of ArchitectureSofiaBulgaria

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