PID controller design for networked control systems

Recalde Camacho, Luis and Katebi, M and Katebi, Powyan; (2011) PID controller design for networked control systems. In: Proceedings of the 16th IEEE International Conference on Emerging Technologies and Factory Automation. IEEE, FRA.

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Abstract

When PID controllers receive the sensor information or transmit its outputs through a communication network, its parameters are difficult to tune using classical PID tuning methods. This is due to stochastic delays introduced by the network in the feedback loop. This paper proposes a design method to compensate the effects of this delay using a constrained optimization to find the PID parameters. The design is based on a polytopic description of the system, which can be formulated using a pdf distribution of the delay. Simulation results are presented to demonstrate the performance of the proposed method.