Observer-based scheme for the control of high order systems with two unstable poles plus time delay

Autor:	David Fernando Novella Rodriguez, Olivier Sename, Basilio del Muro-Cuéllar
Rok vydání:	2013
Předmět:	LTI system theory Renewable Energy Sustainability and the Environment Simple (abstract algebra) Robustness (computer science) Control theory General Chemical Engineering Control (management) Structure (category theory) Waste Management and Disposal Action (physics) Mathematics Term (time)
Zdroj:	Asia-Pacific Journal of Chemical Engineering. 9:167-180
ISSN:	1932-2135
DOI:	10.1002/apj.1757
Popis:	This paper deals with the problem of the stabilization and control of linear time invariant high order systems with two unstable real poles plus time delay. A simple observer based controller is designed in order to achieve a stable behavior of the closed loop system. Necessary and sufficient conditions for the existence of the proposed control structure are stated. Hence, only four proportional gains and the model of the plant are enough to obtain a stable response of the delayed system. Moreover, a robustness analysis is presented in order to compute the maximal uncertainty bound accepted for the delay term. In addition, a two degrees of freedom PI control action is implemented in order to track step references and to reject step disturbances. The achieved performance of the proposed control strategy is illustrated by mean of numerical simulations.
Databáze:	OpenAIRE
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