Design of IMC Controller for TITO Process with Dynamic Closed-Loop Time Constant

  • Parikshit Kumar Paul
  • Chanchal Dey
  • Rajani K. Mudi
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 381)


An IMC controller is designed for two input and two output (TITO) processes with dead time where the closed-loop time constant is varied depending on the process operating condition. For a TITO process, proper decoupling can minimize the loop interaction. Here, we develop an inverted decoupler so that the TITO process can be decoupled into two SISO processes. Each SISO process is considered to be a first-order process with dead time (FOPDT) and IMC controller is designed for each FOPDT process. To make the controller structure proper, we incorporate a first-order filter with closed-loop time constant (λ) which is the only tunable parameter. Instead of a fixed value, dynamic nature is incorporated in selecting the value of λ based on a simple mathematical relation. Superiority of the proposed IMC controller is verified through performance comparison with the well-known multiloop tuning relations.


TITO process IMC design Dynamic closed-loop time constant 


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Copyright information

© Springer India 2016

Authors and Affiliations

  • Parikshit Kumar Paul
    • 1
  • Chanchal Dey
    • 2
  • Rajani K. Mudi
    • 3
  1. 1.Department of Instrumentation & Control EngineeringCIEMKolkataIndia
  2. 2.Department of Applied PhysicsUniversity of CalcuttaKolkataIndia
  3. 3.Department of Instrumentation & Electronics EngineeringJadavpur UniversityKolkataIndia

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