New PI-PD controller design strategy for industrial unstable and integrating processes with dead time and inverse response

G Lloyds Raja, A Ali - Journal of Control, Automation and Electrical …, 2021 - Springer
Industrial processes of unstable/integrating nature having a dead time and inverse response
characteristics are challenging to control. For controlling such processes, double-loop …

Experimentally verified optimal bi-loop re-located IMC strategy for unstable and integrating systems with dead time

P Aryan, GL Raja, R Vilanova - International Journal of Systems …, 2023 - Taylor & Francis
Internal model controllers (IMCs) are popular strategies for controlling stable systems with
dead time. The relocated IMC (RIMC) design reportedly achieves the expected performance …

A novel equilibrium optimized double-loop control scheme for unstable and integrating chemical processes involving dead time

P Aryan, GL Raja - International Journal of Chemical Reactor …, 2022 - degruyter.com
Integrating and unstable chemical processes showcase instability in open-loop
configuration due to the existence of poles at the origin and right-half of the s-plane. They …

Repositioned internal model control strategy on time-delayed industrial processes with inverse behavior using equilibrium optimizer

P Aryan, GL Raja, R Vilanova, M Meneses - IEEE Access, 2023 - ieeexplore.ieee.org
This paper investigates a repositioned inner-loop stabilized internal model control technique
for demanding inverse response industrial processes and bioreactors with …

Decoupled double‐loop FOIMC‐PD control architecture for double integral with dead time processes

D Kumar, P Aryan, GL Raja - The Canadian Journal of …, 2022 - Wiley Online Library
A novel double‐loop control configuration with two controllers is suggested for double
integrating processes with dead‐time. The stabilizing range of the inner‐loop proportional …

Design and implementation of interval type-2 fuzzy logic-PI based adaptive controller for DFIG based wind energy system

KA Naik, CP Gupta, E Fernandez - … Journal of Electrical Power & Energy …, 2020 - Elsevier
In this paper, an advanced interval type-2 fuzzy logic-proportional integral (PI) controller has
been proposed for torque and voltage control loops of rotor side converter of doubly fed …

Design of a novel fractional‐order internal model controller‐based Smith predictor for integrating processes with large dead‐time

D Kumar, P Aryan, GL Raja - Asia‐Pacific Journal of Chemical …, 2022 - Wiley Online Library
A novel multi‐loop control configuration with two controllers is suggested for integrating
processes having large dead‐time. The inner‐loop consists of a Smith predictor having …

Enhanced dual-DOF PI-PD control of integrating-type chemical processes

D Das, S Chakraborty, GL Raja - International Journal of Chemical …, 2023 - degruyter.com
A dual-degree of freedom (dual-DOF) propor-tional-integral proportional-derivative (PI-PD)
controller is developed for integrating-type chemical processes with delay. The interior-loop …

Design and simulation of a novel FOIMC-PD/P double-loop control structure for CSTRs and bioreactors

S Kumari, P Aryan, GL Raja - International Journal of Chemical …, 2021 - degruyter.com
The design of control methods for unstable plants is somewhat complex than that of stable
plants. This is because unstable process models contain one or more poles lying on the …

Hybrid dual-loop control method for dead-time second-order unstable inverse response plants with a case study on CSTR

S Kumari, P Aryan, D Kumar, GL Raja - International Journal of …, 2023 - degruyter.com
Unstable processes are hard to stabilize as they contain one or more positive poles which
result in unbounded dynamic behavior. The occurrence of the delay and positive zeros often …