par Pezzutto, Matthias;Garone, Emanuele 
;Schenato, Luca
Référence IEEE Control Systems Letters, 4, 2, page (271-276), 8743420
Publication Publié, 2020-04-01
;Schenato, LucaRéférence IEEE Control Systems Letters, 4, 2, page (271-276), 8743420
Publication Publié, 2020-04-01
Article révisé par les pairs
| Résumé : | In real applications, plants are usually stabilized by local controllers, while wireless channels are only used to transmit the desired set-points, typically to satisfy constraints arising from coordination needs. Motivated by this fact, in this letter we consider to connect a pre-stabilized plant and a reference governor, a device that modifies the reference signal to satisfy the system constraints, over a wireless lossy network. First, we show that the reference governor formulation can be readily extended to manage packet losses on the uplink or on the downlink. Then, we show that, if both the links are lossy, the problem is more challenging due to information asymmetry between the governor and the plant. In this case, we analyze two different strategies: 1) a quantity to be added to the applied reference is sent and 2) a new reference that substitutes the applied one is sent. The theoretical properties of both strategies are proved. Simulations are reported which show that, depending on the case of study, none of the two solutions is a priori better than the other. |
