An improvement on the PI controller for a class of high-order unstable delayed systems: Application to a thermal process

Journal of Control Engineering and Applied Informatics

Rubén Alejandro Garrido Moctezuma¹  Martín Velasco Villa¹  David Fernando Novella Rodríguez²  Basilio del Muro Cuéllar²  Miguel Angel Hernández Pérez³  Pedro Javier García Ramírez³ 

[1] Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN);Escuela Superior de Ingeniera Mecánica y Eléctrica, Unidad Culhuacán, Instituto Politécnico Nacional.;Universidad Veracruzana

关键词: Linear systems;    time-delay;    modified PI control;    unstable process;    thermal process;   

DOI  :  

学科分类：农业科学（综合）

来源: Societatea Romana de Automatica si Informatica Tehnica

【 摘 要 】

This work addresses the stabilization and control problem of a class of input-output delayed unstable linear systems, i.e. n-order systems with one unstable pole, and possibly one minimum phase zero. The problem is solved employing a modified version of the traditional PI, called the PIf controller, which incorporates a low-pass first order filter. This new scheme allows improving the existing results using the PI controller for high-order systems with time delays. The proposed control strategy is experimentally assessed through the temperature control of a unstable heat flow process.

【 授权许可】

CC BY