Low-order feedback-feedforward controller for dead-time processes with measurable disturbances. Issue 7 (2016)

• Record Type: Journal Article
• Authors: Rodríguez, Carlos; Normey-Rico, Julio E.; Guzmán, José L.; Berenguel, Manuel; Dormido, Sebastián
• Is Part Of: IFAC-PapersOnLine. Volume 49:Issue 7(2016)
• Page Start: 591
• Page End: 596
• Publication Date: 2016
• Subjects: Process control -- Linear control systems -- Feedback control -- Feedforward control -- Delay compensation -- Disturbance rejection -- PID control; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2016.07.407
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper presents simple tuning rules for low-order feedback and feedforward controllers based on an approximation of the filtered Smith predictor with closed-loop feedforward compensation. An analytical development is introduced to control stable first-order plus dead time processes affected by measurable disturbances that cannot be completely removed from the process output due to dead-time effects. Simulation results for the pH control of a tubular photobioreactor and the steam pressure control of an industrial boiler are given to show the effectiveness of the proposed method.