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Item type:Publication, State feedback temperature control based on a Smith predictor in a precalciner of a cement kiln(IEEE Computer Society, 2021-01-01)This paper proposes the design of a state feedback Smith predictor controller (SFC-SP) for the effective temperature control in a precalciner of a cement rotary kiln. The dynamic model of this process is obtained from real-time data by applying a system identification procedure. This identification procedure yields a fourth order with dominant time delay transfer function. A state feedback controller combined with a Smith predictor is therefore designed which behaves effectively. Simulated results compare the performance of the proposed controller with a standard PID controller. Two performance indexes have been used in this comparison: the integral absolute error (IAE), and the control effort (EU). Simulations show that the proposed controller provides lower values of these indexes and, therefore, outperforms the standard PID controller in terms of performance and accuracy - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of a dead-time compensator robust H∞ state feedback temperature controller for a precalciner of a cement rotary kiln(MDPI, 2022-03-01)A dead‐time compensator robust H∞ state feedback controller (DTC‐H∞‐SFC) for the temperature control in a precalciner of a cement rotary kiln is designed. A mathematical model of the process under study with ARMAX structure was obtained. A dead‐time compensator robust H∞ state feedback controller is therefore designed. The results of the comparative evaluation of the DTC‐H∞‐SFC vs. DTC+PI designed controllers showed that the DTC‐H∞‐SFC gives improved performance of the control system.