Síntese conjunta do controlador e dos mecanismos de transmissão por evento em sistemas de controle via rede

Abstract

This work presents a multi-objective formulation for the co-design of controller and event-triggered transmission mechanisms, with sampling period optimization, for networked control systems in order to obtain different tradeoffs between the control system performance and the communication network usage. Random transmission delays and packet loss are considered for each independent communication link. An improved version of the multi-objective differential evolution optimization algorithm is applied to obtain a set of efficient solutions that simultaneously determine the gains of the multivariable proportional-integral controller, the sampling period, and the individual parameters of the decentralized event-triggered transmission mechanisms of each sensor and actuator. The proposed co-design methodology is evaluated through an example of a multivariable control system with two sensors and two actuators. Based on the achieved results, it is evident that the proposed synthesis methodology is quite efficient with considerable reduction in the number of transmissions with equivalent control system performance.