Robustness of event-based discrete PI controllers. A sampled describing function approach

Ponencia presentada en IFAC-PapersOnLine, Volume 53, Issue 2, 2020, Pages 2796-2801In this paper we present a study about the robustness of event-based discrete PI controllers.Our approach is based on Sampled Describing Function technique, which has been used tocharacterize the non-linear effect of the Symmetric Send on Delta (SSOD) sampling strategy onthe control loop. Through several examples this technique is proven to produce accurate resultsin predicting limit cycle oscillations and to provid