Browsing by Author "Mazenc, F."
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Analysis of blood cell production under growth factors switching
Djema, W.; Özbay, Hitay; Bonnet, C.; Fridman, E.; Mazenc, F.; Clairambault, J. (Elsevier B.V., 2017)Hematopoiesis is a highly complicated biological phenomenon. Improving its mathematical modeling and analysis are essential steps towards consolidating the common knowledge about mechanisms behind blood cells production. ... -
Dynamic output feedback stabilization of switched linear systems with delay via a trajectory based approach
Ahmed, Saeed; Mazenc, F.; Özbay, Hitay (Elsevier, 2018)A new technique is proposed to construct observers and to achieve output feedback stabilization of a class of continuous-time switched linear systems with a time-varying delay in the output. The delay is a piecewise ... -
Finite time estimation for time-varying systems with delay in the measurements
Ahmed, Saeed; Malisoff, M.; Mazenc, F. (Elsevier, 2019)We build finite time observers for time-varying nonlinear systems with delays in the outputs, using a dynamic extension that computes fundamental matrices. Our observers achieve finite time convergence when no disturbances ... -
Finite time estimation through a continuous-discrete observer
Mazenc, F.; Ahmed, S.; Malisoff, M. (John Wiley and Sons, 2018)We study two broad classes of nonlinear time-varying continuous-time systems with outputs. For the first class, we build an observer in the case where a state dependent disturbance affects the linear approximation. When ... -
Finite time estimation via piecewise constant measurements⁎
Mazenc, F.; Ahmed, S. (Elsevier B.V., 2018)We study a broad class of linear continuous-time time-varying systems that contain piecewise continuous disturbances and piecewise constant outputs. Under an observability assumption, we construct a new type of observer ... -
Output feedback stabilization by reduced order finite time observers using a trajectory based approach
Malisoff, M.; Mazenc, F.; Ahmed, Saeed (IEEE, 2019)We use finite time reduced order continuous-discrete observers to solve an output feedback stabilization problem for a class of nonlinear time-varying systems whose outputs contain uncertainty. Unlike earlier works, our ... -
Reduced order finite time observers for time-varying nonlinear systems
Mazenc, F.; Ahmed, Saeed; Malisoff, M. (Institute of Electrical and Electronics Engineers Inc., 2019)We build reduced order finite time observers for a large class of nonlinear time-varying continuous-time systems. We illustrate our results using a tracking problem for nonholonomic systems in chained form. -
Stability analysis of switched systems with time-varying discontinuous delays
Mazenc, F.; Malisoff, M.; Özbay, Hitay (IEEE, 2017)A new technique is proposed to ensure global asymptotic stability for nonlinear switched time-varying systems with time-varying discontinuous delays. It uses an adaptation of Halanay's inequality to switched systems and a ... -
Stability and robustness analysis for switched systems with time-varying delays
Mazenc, F.; Malisoff, M.; Özbay, Hitay (Society for Industrial and Applied Mathematics Publications, 2018)A new technique is presented for the stability and robustness analysis of nonlinear switched time-varying systems with uncertainties and time-varying delays. The delays are allowed to be discontinuous (but are required to ... -
State feedback stabilization of switched systems with delay: trajectory based approach
Mazenc, F.; Ahmed, Saeed; Özbay, Hitay (IEEE, 2017)We present a new trajectory based approach for state feedback stabilization of switched linear continuous-time systems with a time-varying input delay. In contrast with finding classical common Lyapunov function or multiple ...