Paulo Bacelar Reis Pedreiras

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Driven by the need to make a more efficient use of communication and computational resources, recently, a strong research effort has been devoted to the study of control systems integrating several controllers, with the goal of selecting the controller that allows to meet the desired quality of control while minimizing resource usage. However, most of the(More)
The problem of optimal control given full state knowledge has been solved many years ago and is very well documented. Nonetheless, in most control settings it is virtually impossible to know the exact state value. To deal with this fact, two concepts were introduced: certainty equivalence and separation principle. In this paper, it is presented a novel(More)
The discipline of linear control in centralized systems has been extensively studied and optimal results can already be found in the literature. However, in recent years, new variants of control systems have appeared, among them control communication networks with various degrees of reliability. Two approaches have been defined to cope with missing control(More)
Over the last few years the problem of optimal estimation and control over lossy networks has been studied in detail. However, most of such works assume that in the absence of a new actuation value, the actuator either outputs zero or the previous value. Some other extensions have been proposed, but they present similar limitations. This paper shows that(More)
Nowadays the use of so-called Network Control Systems is a common practice. Although convenient, networks introduce several perturbations to the control system, due to the additional latency, jitter and even errors that arise when messages fail to be delivered. This paper presents a control architecture that attenuates the impact of the network on the(More)
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