Delay-independent dual-rate PID controller for a packet-based networked control system

Abstract

La gasolina comercial es una mezcla de componentes obtenidos de la destilación del petróleo. El reto del Sistema de Optimización y Control es maximizar el margen económico del proceso utilizando la mezcla de componentes más barata, satisfaciendo la composición de las mezclas, los inventarios, la disponibilidad de las unidades de producción y las restricciones hidráulicas de las líneas. La complejidad de estos sistemas de mezcla ha ido aumentando debido a la competencia creciente en el sector, las refinería más competitivas realizan las mezclas con componentes que provienen directamente de unidad sin pasar por almacenamiento intermedio, método rundown, se disminuyen inventarios y se aumenta el beneficio. En este artículo se presenta un método innovador consistente en aplicar distintos niveles de automatización emulando la estrategia de control en cascada. Los resultados obtenidos en simulación han permitido aplicar el método propuesto en una instalación real, donde se ha podido contrastar la bondad del método y su generalización a un sistema con dimensionamiento real.

Event‐triggered observer‐based robust H∞ control for networked control systems with unknown disturbance

“…Yet, along with these advantages, some challenging issues (bandwidth allocation, communication delay, packet dropouts, packet disorders, and channel fading) emerged and gave rise to much attention. Then most recently, the research on the NCSs has become a heated topic and many elegant results have been proposed . For instance, in Reference , an optimal linear filter for the NCSs was designed with involving time‐correlated fading channels.…”

“…As for distributed NCSs, in Reference , both communication constraints (packet dropouts and quantization) and switching topology were addressed. Meanwhile, since communication delay inevitably exists and leads to poor performance, then References deeply studied its negative effects when designing the controllers. In Reference , a delay‐independent control structure was proposed to jointly tackle the communication delay, packet dropouts, and disorder.…”

“…Meanwhile, since communication delay inevitably exists and leads to poor performance, then References deeply studied its negative effects when designing the controllers. In Reference , a delay‐independent control structure was proposed to jointly tackle the communication delay, packet dropouts, and disorder. Together with disturbance and network‐induced delay, the passivity was addressed by designing the resilient controller.…”

“…Especially by utilizing decentralized control, in Reference , the discrete‐time NCSs was studied, and in Reference , the tradeoff between the transmission intervals and communication delay was discussed. It is worth noting that, since some developed techniques were not utilized in References , the problems on reduced conservativeness were not deeply analyzed and their application areas needed to be enlarged, which will be considered in our work.…”

A Remote Control Strategy for an Autonomous Vehicle with Slow Sensor Using Kalman Filtering and Dual-Rate Control

“…The solution fits in the field of Networked Control Systems (NCSs) [1,2,3,4], which is a prolific control area that addresses control scenarios where different devices share a common communication link. The use of a shared communication network introduces some advantages like cost reduction, reconfigurability, and ease of installation and maintenance, but also some drawbacks such as the possible occurrence of network-induced delays [5,6,7,8,9,10], packet dropouts [11,12,13], packet disorder [14,15,16], and network bandwidth constraints [17,18,19]. In this work, the drawbacks considered in the network are time-varying delays and packet disorder.…”