Controle baseado em eventos de sistemas lineares a parâmetros variantes sob distúrbios de energia limitada e atuadores saturantes

Abstract

Networked Control Systems (NCS) play a crucial role in industrial and technological applications, enabling communication between sensors, controllers, and actuators via communication networks. However, data transmission constraints, actuator saturation, and disturbances can compromise system performance and even stability. Event-Triggered Control (ETC) strategies have been widely explored to mitigate these effects, optimizing network usage while preserving stability and performance. In this context, this work presents a study on Periodic Event-Triggered Control (PETC) applied to NCS that can be represented by Linear Parameter-Varying (LPV) systems, subject to actuator saturation and bounded-energy external disturbances. Four event-triggering mechanism (ETM) schemes are investigated: two static, one dynamic, and one adaptive. For each scheme, co-design conditions based on Linear Matrix Inequalities (LMI) are formulated, considering both synchronous and asynchronous scenarios between the plant and controller parameters. Additionally, an extension of these conditions is presented to handle state constraints in quasi-LPV systems. The effectiveness of the proposed approaches is validated through numerical simulations, evaluating the performance of the different PETC schemes under multiple operating conditions.