Seddik M. Djouadi
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View article: General Decentralized Stochastic Optimal Control via Change of Measure: Applications to the Witsenhausen Counterexample
General Decentralized Stochastic Optimal Control via Change of Measure: Applications to the Witsenhausen Counterexample Open
In this paper we present global and person-by-person (PbP) optimality conditions for general decentralized stochastic dynamic optimal control problems, using a discrete-time version of Girsanov's change of measure. The PbP optimality condi…
View article: A Graph Neural Network Framework for Security Assessment Using Topological Measures
A Graph Neural Network Framework for Security Assessment Using Topological Measures Open
View article: Model-Free Control of Indoor Temperatures in Residential Buildings: Convergence Analysis
Model-Free Control of Indoor Temperatures in Residential Buildings: Convergence Analysis Open
Model-free control (MFC) has recently been applied in multiple fields, including indoor air temperature regulation in buildings. It is a data-enabled feedback tracking control strategy for complex systems using a simplified representation …
View article: Chemo and immunotherapy effects on stability regions of tumor models
Chemo and immunotherapy effects on stability regions of tumor models Open
View article: Model-Free Building Temperature Control and Power Allocation Under Measurement Time Delays
Model-Free Building Temperature Control and Power Allocation Under Measurement Time Delays Open
Taking a step towards a greener planet has created an increased need for a higher integration of renewable energy resources into the electric grid. Nonetheless, the intermittency and uncertainty associated with renewable generation have sl…
View article: Necessary and sufficient conditions for quadratic stabilizability of switched systems on non-uniform time domains
Necessary and sufficient conditions for quadratic stabilizability of switched systems on non-uniform time domains Open
View article: Graph Neural Network Framework for Security Assessment Informed by Topological Measures
Graph Neural Network Framework for Security Assessment Informed by Topological Measures Open
In the power system, security assessment (SA) plays a pivotal role in determining the safe operation in a normal situation and some contingencies scenarios. Electrical variables as input variables of the model are mainly considered to indi…
View article: A Novel Framework for Decentralized Dynamic Resource Allocation Using Voronoi Tessellations
A Novel Framework for Decentralized Dynamic Resource Allocation Using Voronoi Tessellations Open
In this work, we approach the problem of resource allocation in a team of agents through the framework of Centroidal Voronoi Tessellations. CVTs provide a natural way to embed a desired global trend in the team through probability distribu…
View article: Hierarchical Model-Free Transactive Control of Building Loads to Support Grid Services
Hierarchical Model-Free Transactive Control of Building Loads to Support Grid Services Open
Residential buildings consume 4.4 quads of electricity annually, approximately 37% of the total electricity consumption in the United States. This represents a vast resource that can be used for demand management and other ancillary servic…
View article: A dwell time approach for the stabilization of mixed Continuous/Discrete switched systems
A dwell time approach for the stabilization of mixed Continuous/Discrete switched systems Open
View article: Computation of Centroidal Voronoi Tessellations in High Dimensional spaces
Computation of Centroidal Voronoi Tessellations in High Dimensional spaces Open
Owing to the natural interpretation and various desirable mathematical properties, centroidal Voronoi tessellations (CVT) have found a wide range of applications and correspondingly a vast development in their literature. However the compu…
View article: Exploring Physical-Based Constraints in Short-Term Load Forecasting: A Defense Mechanism Against Cyberattack
Exploring Physical-Based Constraints in Short-Term Load Forecasting: A Defense Mechanism Against Cyberattack Open
Short-term load forecasting is an essential task that supports utilities to schedule generating sufficient power for balancing supply and demand, and can become an attractive target for cyber attacks. It has been shown that the power syste…
View article: Stochastic Pricing Game for Aggregated Demand Response Considering Comfort Level
Stochastic Pricing Game for Aggregated Demand Response Considering Comfort Level Open
In recent years, demand response (DR) has been explored as a fundamental strategy for demand-side management due to its advantages in mediating intermittency of renewable energy generation, load shifting, etc. To engage customers in DR pro…
View article: Dynamic Building Load Control to Facilitate High Penetration of Solar Photovoltaic Generation (Final Technical Report)
Dynamic Building Load Control to Facilitate High Penetration of Solar Photovoltaic Generation (Final Technical Report) Open
Solar photovoltaic (PV) resources are the most common form of distributed generation in residential and commercial customer premises within electric distribution networks. A higher penetration of PV generation in distribution circuits will…
View article: Inertia Emulation Control using Demand Response via 5G Communications
Inertia Emulation Control using Demand Response via 5G Communications Open
Building energy equipment is moving rapidly towards Internet of Things (IoT)-driven devices to provide consumer connectivity and device management. These device-level interfaces along with 5G communications will be leveraged to develop con…
View article: Numerical Evaluation of Exact Person-by-Person Optimal Nonlinear Control Strategies of the Witsenhausen Counterexample
Numerical Evaluation of Exact Person-by-Person Optimal Nonlinear Control Strategies of the Witsenhausen Counterexample Open
Witsenhausen's 1968 counterexmaple is a simple two-stage decentralized stochastic control problem that highlighted the difficulties of sequential decision problems with non-classical information structures. Despite extensive prior efforts,…
View article: Power allocation by load aggregator with heterogeneous loads using weighted projection
Power allocation by load aggregator with heterogeneous loads using weighted projection Open
View article: Robust Output Feedback Control Design for Inertia Emulation by Wind Turbine Generators
Robust Output Feedback Control Design for Inertia Emulation by Wind Turbine Generators Open
Wind generation has gained widespread use as a renewable energy source. Most wind turbines and other renewables connected to the grid through converters result in a reduction in the natural inertial response to grid frequency changes. The …
View article: Adaptive Control for Residential HVAC Systems to Support Grid Services
Adaptive Control for Residential HVAC Systems to Support Grid Services Open
In this paper, we propose an adaptive control strategy for residential buildings' heating ventilation and air conditioning (HVAC) systems to support grid services. The proposed control strategy captures the time-varying characteristics of …
View article: Toward simple in silico experiments for drugs administration in some cancer treatments
Toward simple in silico experiments for drugs administration in some cancer treatments Open
View article: Numerical Evaluation of Exact Person-by-Person Optimal Nonlinear Control\n Strategies of the Witsenhausen Counterexample
Numerical Evaluation of Exact Person-by-Person Optimal Nonlinear Control\n Strategies of the Witsenhausen Counterexample Open
Witsenhausen's 1968 counterexmaple is a simple two-stage decentralized\nstochastic control problem that highlighted the difficulties of sequential\ndecision problems with non-classical information structures. Despite extensive\nprior effor…
View article: Review on set-theoretic methods for safety verification and control of power system
Review on set-theoretic methods for safety verification and control of power system Open
Increasing penetration of renewable energy introduces significant uncertainty into power systems. Traditional simulation-based verification methods may not be applicable due to the unknown-but-bounded feature of the uncertainty sets. Emerg…
View article: Voltage Restoration in Microgrids using Temporal Logic Specifications
Voltage Restoration in Microgrids using Temporal Logic Specifications Open
This paper proposes an energy storage controller synthesis method for voltage restoration in microgrids with respect to temporal logic specifications (TLSs). TLSs is introduced in this paper as a formalism to control the voltage variation …
View article: Hierarchical Model-Free Transactional Control of Building Loads to Support Grid Services
Hierarchical Model-Free Transactional Control of Building Loads to Support Grid Services Open
A transition from generation on demand to consumption on demand is one of the solutions to overcome the many limitations associated with the higher penetration of renewable energy sources. Such a transition, however, requires a considerabl…
View article: Determining the Reaction Time for Triggering Supportive Control Actions to Guarantee Adequate Frequency Response in Smart Grids
Determining the Reaction Time for Triggering Supportive Control Actions to Guarantee Adequate Frequency Response in Smart Grids Open
The progressive integration of renewable energy resources in the modern power grid can result in unsatisfactory frequency responses. To address this problem, wind turbine generators (WTGs), in particular, can be employed to support the pow…
View article: Review on Set-Theoretic Methods for Safety Verification and Control of Power System
Review on Set-Theoretic Methods for Safety Verification and Control of Power System Open
Increasing penetration of renewable energy introduces significant uncertainty into power systems. Traditional simulation-based verification methods may not be applicable due to the unknown-but-bounded feature of the uncertainty sets. Emerg…
View article: Stabilization of Switched Systems on Non-Uniform Time Domain with Dwell Time
Stabilization of Switched Systems on Non-Uniform Time Domain with Dwell Time Open
In this paper, we will present new stability conditions for a special class of linear switched systems, that evolves on non-uniform time domain. The considered systems switches between continuous-time subsystems on intervals with variable …
View article: Stability analysis of model-free control under constrained inputs for control of building HVAC systems
Stability analysis of model-free control under constrained inputs for control of building HVAC systems Open
Recently introduced model-free control method has witnessed successful applications in various domains. While the framework of model-free control renders it simple and efficient, it imposes difficulties in implementing the method for compl…
View article: Nuclear-Norm-Based Subspace Identification of Multi-Zone Building HVAC System
Nuclear-Norm-Based Subspace Identification of Multi-Zone Building HVAC System Open
There have been many attempts to reduce the uncertainty associated with renewable energy. This paper aims to contribute to the field by considering the building heating, ventilation and air conditioning (HVAC) system, which is treated as f…
View article: Novel stochastic methods to predict short-term solar radiation and photovoltaic power
Novel stochastic methods to predict short-term solar radiation and photovoltaic power Open