@article {190, title = {Robust Distributed Synchronization of Networked Linear Systems with Intermittent Information}, journal = {Automatica}, volume = {105}, year = {2019}, month = {July}, pages = {323-333}, author = {S. Phillips and R. G. Sanfelice} } @article {163, title = {Robust Distributed Estimation for Linear Systems under Intermittent Information}, journal = {IEEE Transactions on Automatic Control}, volume = {63}, number = {4}, year = {2018}, month = {April}, pages = {973-988}, author = {Y. Li and S. Phillips and R. G. Sanfelice} } @article {132, title = {Basic Properties and Characterizations of Incremental Stability Prioritizing Flow Time for a Class of Hybrid Systems}, journal = {Systems and Control Letters}, volume = {90}, year = {2016}, month = {April}, pages = {7-15}, author = {Y. Li and S. Phillips and R. G. Sanfelice} } @article {112, title = {Robust Asymptotic Stability of Desynchronization in Impulse-Coupled Oscillators}, journal = {IEEE Transactions on Control of Network Systems}, volume = {3}, year = {2016}, month = {June}, pages = {127-136}, abstract = {

The property of desynchronization in an all-to-all network of homogeneous impulse-coupled oscillators is studied. Each impulse-coupled oscillator is modeled as a hybrid system with a single timer state that self-resets to zero when it reaches a threshold, at which event all other impulse-coupled oscillators adjust their timers following a common reset law. In this setting, desynchronization is considered as each impulse-coupled oscillator{\textquoteright}s timer having equal separation between successive resets. We show that for the considered model, desynchronization is an asymptotically stable property. For this purpose, we recast desynchronization as a set stabilization problem and employ Lyapunov stability tools for hybrid systems. Furthermore, several perturbations are considered showing that desynchronization is a robust property. Perturbations on the continuous and discrete dynamics are considered. Numerical results are presented to illustrate the main contributions.

}, keywords = {hybrid systems}, author = {S. Phillips and R. G. Sanfelice} } @conference {247, title = {Towards Hybrid Model Predictive Control for Computationally Aware Satellite Applications}, booktitle = {Proceedings of Workshop on Computation-Aware Algorithmic Design for Cyber-Physical Systems, CPSWeek 2021}, year = {2021}, month = {May}, pages = {15-17}, author = {C. Peterson and S. Phillips and D. Hustig-Schultz and R. G. Sanfelice} } @conference {204, title = {Observer-Based Synchronization of Multi-Agent Systems Using Intermittent Measurements}, booktitle = {Proceedings of the 2019 IEEE Conference on Decision and Control}, year = {2019}, month = {December}, pages = {8160 - 8165}, author = {S. Phillips and R. G. Sanfelice} } @conference {184, title = {A Hybrid {PID} Design for Asymptotic Stabilization with Intermittent Measurements}, booktitle = {Proceedings of the 2018 IEEE Conference on Decision and Control}, year = {2018}, month = {December}, pages = {737-742}, author = {D. Lavell and S. Phillips and R. G. Sanfelice} } @conference {166, title = {Robust Exponential Stability of an Intermittent Transmission State Estimation Protocol}, booktitle = {Proceedings of the American Control Conference}, year = {2018}, month = {August}, pages = {622-627}, author = {S. Phillips and R. S. Erwin and R. G. Sanfelice} } @conference {165, title = {Stealthy Attacks in Cloud-Connected (Linear-Impulsive) Systems}, booktitle = {Proceedings of the American Control Conference}, year = {2018}, month = {August}, pages = {146-152}, author = {A. Duz and S. Phillips and A. Fagiolini and R. G. Sanfelice and F. Pasqualetti} } @conference {162, title = {Hybrid Attack Monitor Design to Detect Recurrent Attacks in a Class of Cyber-Physical Systems}, booktitle = {Proceedings of the 2017 IEEE Conference on Decision and Control}, series = {NULL}, year = {2017}, month = {December}, pages = {1368-1373}, author = {S. Phillips and A. Duz and F. Pasqualetti and R. G. Sanfelice} } @conference {150, title = {On Asymptotic Synchronization of Interconnected Hybrid Systems with Applications}, booktitle = {Proceedings of the American Control Conference}, series = {NULL}, year = {2017}, month = {May}, pages = {2291-2296}, author = {S. Phillips and R. G. Sanfelice} } @conference {140, title = {A Hybrid Consensus Protocol for Pointwise Exponential Stability with Intermittent Information}, booktitle = {Proceedings of 10th IFAC Symposium on Nonlinear Control Systems}, year = {2016}, pages = {146--151}, author = {S. Phillips and Y. Li and R. G. Sanfelice} } @conference {139, title = {On Distributed Observers for Linear Time-invariant Systems Under Intermittent Information Constraints}, booktitle = {Proceedings of 10th IFAC Symposium on Nonlinear Control Systems}, year = {2016}, pages = {654--659}, author = {Y. Li and S. Phillips and R. G. Sanfelice} } @conference {131, title = {Robust Synchronization of Interconnected Linear Systems over Intermittent Communication Networks}, booktitle = {Proceedings of the American Control Conference}, series = {NULL}, year = {2016}, pages = {5575--5580}, abstract = {

The property of synchronization of multiple identical linear time-invariant (LTI) systems connected through a graph in a network with stochastically-driven isolated communication events is studied. More precisely, the goal is to design a feedback controller that, using information obtained over such networks, asymptotically drives the values of their states to synchronization and render the synchronization condition Lyapunov stable. To solve this problem, we propose a controller with hybrid dynamics, namely, the controller exhibits continuous dynamics between communication events while it has variables that jump at such events. Due to the additional continuous and discrete dynamics inherent to the networked systems and communication structure, we use a hybrid systems framework to model the closed-loop system and design the controller. The problem of synchronization is then recast as a compact set stabilization problem and, by employing Lyapunov stability tools for hybrid systems, sufficient conditions for asymptotic stability of the synchronization set are provided. Furthermore, we show that synchronization property is robust to a class of perturbations on the transmitted data. Numerical examples illustrate the main results.\ 

}, author = {S. Phillips and R. G. Sanfelice} } @conference {119, title = {Robust Synchronization of Two Linear Systems over Intermittent Communication Networks}, booktitle = {Proceedings of the IEEE Conference on Decision and Control}, series = {NULL}, year = {2015}, month = {December}, pages = {5569--5574}, author = {S. Phillips and R. G. Sanfelice} } @conference {102, title = {Results on Incremental Stability for a Class of Hybrid Systems}, booktitle = {Proceedings of the 53rd IEEE Conference on Decision and Control}, series = {NULL}, year = {2014}, month = {December}, pages = {3089--3094}, abstract = {

Incremental stability is the notion that the distance between every pair of solutions to the system has stable behavior and approaches zero asymptotically. This paper introduces this notion for a class of hybrid systems. In particular, we define incremental stability as well as incremental partial stability, and study their properties. The approach used to derive our results consists of recasting the incremental stability problem as a set stabilization problem, for which the tools for asymptotic stability of hybrid systems are applicable. In particular, we propose an auxiliary hybrid system to study the stability of the diagonal set, which relates to incremental stability of the original system. The proposed notions are illustrated in examples throughout the paper.

}, keywords = {hybrid systems}, author = {Y. Li and S. Phillips and R. G. Sanfelice} } @conference {93, title = {A Framework for Modeling and Analysis of Robust Stability for Spiking Neurons}, booktitle = {Proceedings of the American Control Conference}, series = {NULL}, year = {2014}, month = {June}, pages = {1414-1419}, keywords = {hybrid systems}, author = {S. Phillips and R. G. Sanfelice} } @conference {72, title = {Results on the Asymptotic Stability Properties of Desynchronization in Impulse-coupled Oscillators}, booktitle = {Proceedings of the American Control Conference}, series = {NULL}, year = {2013}, month = {June}, pages = {3278{\textendash}3283}, keywords = {hybrid systems}, url = {https://hybrid.soe.ucsc.edu/files/preprints/72.pdf}, author = {S. Phillips and R. G. Sanfelice} } @conference {61, title = {On the Synchronization of Two Impulsive Oscillators under Communication Constraints}, booktitle = {Proceedings of the American Control Conference}, series = {NULL}, year = {2012}, pages = {2443{\textendash}2448}, keywords = {hybrid systems}, doi = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=\&arnumber=6315647}, url = {https://hybrid.soe.ucsc.edu/files/preprints/61.pdf}, author = {S. Phillips and R. G. Sanfelice and R. S. Erwin} }