Carlos Silvestre
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View article: A self-organizing distributed algorithm to tackle the stochastic coverage problem
A self-organizing distributed algorithm to tackle the stochastic coverage problem Open
Achieving coverage of a mission plane using large-scale rigid drone formations through the use of multi-agent algorithms like linear consensus subsumes a large communication cost. Even though the algorithm itself only requires local commun…
View article: Analysis of gradient descent algorithms: Discrete to continuous domains and circuit equivalents
Analysis of gradient descent algorithms: Discrete to continuous domains and circuit equivalents Open
Funding Information: The work from Daniel Silvestre is supported in part by the Portuguese Foundation for Science and Technology through the project CTS/00066. The work from Carlos Silvestre is supported in part by the Macao Science and Te…
View article: Event-Triggered Synergistic Controllers with Dwell-Time Transmission
Event-Triggered Synergistic Controllers with Dwell-Time Transmission Open
We propose novel event-triggered synergistic controllers for nonlinear continuous-time plants by incorporating event-triggered control into stabilizing synergistic controllers. We highlight that a naive application of common event-triggeri…
View article: Microwave Displacement Sensing Based on Slot Antenna Over Metasurface and Its Applications for Automatic Trolling Motor
Microwave Displacement Sensing Based on Slot Antenna Over Metasurface and Its Applications for Automatic Trolling Motor Open
This letter presents a microwave displacement sensor based on a slot antenna integrated with a solar panel metasurface. By leveraging near‐field coupling between the antenna and metasurface, the sensor achieves dual‐band operation ( f 1 = …
View article: Model-Based Event-Triggered Implementation of Hybrid Controllers Using Finite-Time Convergent Observers
Model-Based Event-Triggered Implementation of Hybrid Controllers Using Finite-Time Convergent Observers Open
In this paper, we explore the conditions for asymptotic stability of the hybrid closed-loop system resulting from the interconnection of a nonlinear plant, an intelligent sensor that generates finite-time convergent estimates of the plant …
View article: Saturated Trajectory Tracking Controller in the Body-Frame for Quadrotors
Saturated Trajectory Tracking Controller in the Body-Frame for Quadrotors Open
This paper introduces a quadrotor trajectory tracking controller comprising a steady-state optimal position controller with a normed input saturation and modular integrative action coupled with a backstepping attitude controller. First, th…
View article: Model-based event-triggered control for linear systems using a finite-time convergent observer
Model-based event-triggered control for linear systems using a finite-time convergent observer Open
In this paper, we present an improved model-based event-triggered control approach for regulation of networked linear time-invariant plants by integrating a finite-time convergent observer. Utilizing the send-on-delta concept, we introduce…
View article: Constructive barrier feedback for collision avoidance in leader-follower formation control
Constructive barrier feedback for collision avoidance in leader-follower formation control Open
This paper proposes a novel constructive barrier feedback for reactive collision avoidance between two agents. It incorporates this feature in a formation tracking control strategy for a group of 2nd-order dynamic robots defined in three-d…
View article: Cooperative decentralized navigation algorithms based on bearing measurements for arbitrary measurement topologies
Cooperative decentralized navigation algorithms based on bearing measurements for arbitrary measurement topologies Open
This work presents and compares several cooperative navigation solutions for formations of autonomous underwater vehicles, equipped with depth sensors and capable of taking bearing measurements to their neighbors under a certain measuremen…
View article: robust synergistic hybrid feedback
robust synergistic hybrid feedback Open
Synergistic hybrid feedback refers to a collection of feedback laws that allow for global asymptotic stabilization of a compact set through the following switching logic: given a collection of Lyapunov functions that are indexed by a logic…
View article: Formation control of a leader-follower structure in three dimensional space using bearing measurements
Formation control of a leader-follower structure in three dimensional space using bearing measurements Open
This paper addresses the problem of bearing leader-follower formation control in three-dimensional space by exploring the persistence of excitation (PE) of the desired formation. Using only bearing and relative velocity measurements, distr…