naa a22 4500 510820247 CHVBK 20180411083528.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11814-012-0161-6 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0161-6 A unified approach to the design of advanced proportional-integral-derivative controllers for time-delay processes [Elektronische Daten] [Truong Vu, Moonyong Lee] A unified approach for the design of proportional-integral-derivative (PID) controllers cascaded with first-order lead-lag filters is proposed for various time-delay processes. The proposed controller's tuning rules are directly derived using the Padé approximation on the basis of internal model control (IMC) for enhanced stability against disturbances. A two-degrees-of-freedom (2DOF) control scheme is employed to cope with both regulatory and servo problems. Simulation is conducted for a broad range of stable, integrating, and unstable processes with time delays. Each simulated controller is tuned to have the same degree of robustness in terms of maximum sensitivity (Ms). The results demonstrate that the proposed controller provides superior disturbance rejection and set-point tracking when compared with recently published PID-type controllers. Controllers' robustness is investigated through the simultaneous introduction of perturbation uncertainties to all process parameters to obtain worst-case process-model mismatch. The process-model mismatch simulation results demonstrate that the proposed method consistently affords superior robustness. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 PID Controller Design nationallicence Lead-lag Filter nationallicence Disturbance Rejection nationallicence Set-point Tracking nationallicence Two-degree-of-freedom (2DOF) Control Scheme nationallicence Vu Truong Faculty of Mechanical Engineering, University of Technical Education of Ho Chi Minh City, Ho Chi Minh City, Vietnam aut Lee Moonyong School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/3(2013-03-01), 546-558 0256-1115 30:3<546 2013 30 11814 https://doi.org/10.1007/s11814-012-0161-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0161-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vu Truong Faculty of Mechanical Engineering, University of Technical Education of Ho Chi Minh City, Ho Chi Minh City, Vietnam aut NATIONALLICENCE 700 1- Lee Moonyong School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/3(2013-03-01), 546-558 0256-1115 30:3<546 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer