Search Results for author: Ahmad F. Taha

Found 24 papers, 2 papers with code

Real-time Regulation of Detention Ponds via Feedback Control: Balancing Flood Mitigation and Water Quality

no code implementations7 Mar 2024 Marcus Nóbrega Gomes Jr, Ahmad F. Taha, Luis Miguel C. Rápallo, Eduardo M. Mendiondo, Marcio H. Giacomoni

In this paper, we develop a distributed quasi-2D hydrologic-hydrodynamic coupled with a reservoir flood routing model and an optimization approach (MPC) to identify the opening or closing of valves and movable gates working as spillways.

Model Predictive Control

Observability for Nonlinear Systems: Connecting Variational Dynamics, Lyapunov Exponents, and Empirical Gramians

no code implementations22 Feb 2024 Mohamad H. Kazma, Ahmad F. Taha

One common approach to quantify observability for nonlinear systems is via the Empirical Gramian (Empr-Gram) -- a generalized form of the Gramian of linear systems.

On the Constrained CAV Platoon Control Problem

no code implementations24 Jan 2024 MirSaleh Bahavarnia, Junyi Ji, Ahmad F. Taha, Daniel B. Work

The main objective of the connected and automated vehicle (CAV) platoon control problem is to regulate CAVs' position while ensuring stability and accounting for vehicle dynamics.

Quality-Aware Hydraulic Control in Drinking Water Networks via Controllability Proxies

no code implementations22 Jan 2024 Salma M. Elsherif, Mohamad H. Kazma, Ahmad F. Taha

An added challenge is the dependency of the water quality dynamics on the system's hydraulics, which influences the performance of the water quality controller.

Scheduling

Learning for System Identification of NDAE-modeled Power Systems

no code implementations12 Dec 2023 Wenjie Mei, Muhammad Nadeem, MirSaleh Bahavarnia, Ahmad F. Taha

Finally, the paper demonstrates the efficacy and precision of the proposed NN through the identification and simulation of solution trajectories for the considered DAE-modeled power system.

On Scaling Robust Feedback Control and State Estimation Problems in Power Networks

no code implementations29 Nov 2023 MirSaleh Bahavarnia, Muhammad Nadeem, Ahmad F. Taha

Many mainstream robust control/estimation algorithms for power networks are designed using the Lyapunov theory as it provides performance guarantees for linear/nonlinear models of uncertain power networks but comes at the expense of scalability and sensitivity.

Robust Feedback Control of Power Systems with Solar Plants and Composite Loads

no code implementations1 Oct 2023 Muhammad Nadeem, MirSaleh Bahavarnia, Ahmad F. Taha

Due to the rapid developments in synchronized measurement technologies, there exist enormous opportunities to attenuate disturbances in future power grids with high penetration of renewables and complex load demands.

On Updating Static Output Feedback Controllers Under State-Space Perturbation

no code implementations30 Jul 2023 MirSaleh Bahavarnia, Ahmad F. Taha

A typical approach to attenuate the impacts of such perturbations on the system stability is repeating the whole controller design procedure to find an updated stabilizing SOF controller.

State-Robust Observability Measures for Sensor Selection in Nonlinear Dynamic Systems

no code implementations13 Jul 2023 Mohamad H. Kazma, Sebastian A. Nugroho, Aleksandar Haber, Ahmad F. Taha

The approach is performed by discretizing the system's dynamics using the implicit Runge-Kutta method and by introducing a state-averaged observability measure.

ODE Transformations of Nonlinear DAE Power Systems

no code implementations30 Jun 2023 Mohamad H. Kazma, Ahmad F. Taha

DAE system theory is less understood in the context of power system dynamics.

Revisiting the Optimal PMU Placement Problem in Multi-Machine Power Networks

no code implementations23 Jun 2023 Mohamad H. Kazma, Ahmad F. Taha

A moving horizon estimation approach is explored to reconstruct the joint differential and algebraic initial states of the system, as a gateway to the OPP problem which is then formulated as a computationally tractable integer program (IP).

CAV Traffic Control to Mitigate the Impact of Congestion from Bottlenecks: A Linear Quadratic Regulator Approach and Microsimulation Study

no code implementations17 Jun 2023 Suyash C. Vishnoi, Junyi Ji, MirSaleh Bahavarnia, Yuhang Zhang, Ahmad F. Taha, Christian G. Claudel, Daniel B. Work

The effectiveness of the proposed traffic control algorithms is tested using a traffic control example and compared with existing proportional-integral (PI)- and model predictive control (MPC)- based controllers from the literature.

Model Predictive Control

Sorta Solving the OPF by Not Solving the OPF: DAE Control Theory and the Price of Realtime Regulation

no code implementations7 Apr 2023 Muhammad Nadeem, Ahmad F. Taha

This paper presents a new approach to solve or approximate the AC optimal power flow (ACOPF).

Comprehensive Framework for Controlling Nonlinear Multi-Species Water Quality Dynamics

no code implementations20 Feb 2023 Salma M. Elsherif, Ahmad F. Taha, Ahmed A. Abokifa, Lina Sela

Tracing disinfectant (e. g., chlorine) and contaminants evolution in water networks requires the solution of 1- D advection-reaction (AR) partial differential equations (PDEs).

Robust Dynamic State Estimation of Multi-Machine Power Networks with Solar Farms and Dynamics Loads

no code implementations20 Sep 2022 Muhammad Nadeem, Ahmad F. Taha

Conventional state estimation routines of electrical grids are mainly reliant on dynamic models of fossil fuel-based resources.

Traffic State Estimation for Connected Vehicles using the Second-Order Aw-Rascle-Zhang Traffic Model

no code implementations6 Sep 2022 Suyash C. Vishnoi, Sebastian A. Nugroho, Ahmad F. Taha, Christian G. Claudel

Various state-estimation methods used for TSE in the literature along with the presented approach are compared with regard to accuracy and computational tractability with the help of a numerical study using the VISSIM traffic simulation software.

Data-Driven Identification of Dynamic Quality Models in Drinking Water Networks

no code implementations13 Jul 2022 Shen Wang, Ankush Chakrabarty, Ahmad F. Taha

Traditional control and monitoring of water quality in drinking water distribution networks (WDN) rely on mostly model- or toolbox-driven approaches, where the network topology and parameters are assumed to be known.

Dynamic State Estimation of Nonlinear Differential Algebraic Equation Models of Power Networks

no code implementations15 Jun 2022 Muhammad Nadeem, Sebastian A. Nugroho, Ahmad F. Taha

This paper investigates the joint problems of dynamic state estimation of algebraic variables (voltage and phase angle) and generator states (rotor angle and frequency) of nonlinear differential algebraic equation (NDAE) power network models, under uncertainty.

Flood Risk Mitigation and Valve Control in Stormwater Systems: State-Space Modeling, Control Algorithms, and Case Studies

1 code implementation2 May 2022 Marcus N. Gomes Junior, Marcio H. Giacomoni, Ahmad F. Taha, Eduardo M. Mendiondo

In addition, there is an absence of a coupled integrated control model for systems composed of watersheds, reservoirs, and channels for flood mitigation.

Management Model Predictive Control

Feedback Stabilization and Output Tracking for Discrete-Time Lipschitz Nonlinear Systems via Iterative Convex Approximations

no code implementations21 Apr 2021 Sebastian A. Nugroho, Suyash C. Vishnoi, Ahmad F. Taha, Christian G. Claudel

The stabilization of unstable nonlinear systems and tracking control are challenging engineering problems due to the encompassed nonlinearities in dynamic systems and their scale.

Model Order Reduction for Water Quality Dynamics

no code implementations22 Feb 2021 Shen Wang, Ahmad F. Taha, Ankush Chakrabarty, Lina Sela, Ahmed Abokifa

Such representation is a byproduct of space- and time-discretization of the PDE modeling transport dynamics.

Model Predictive Control

Towards Understanding Sensor and Control Nodes Selection in Nonlinear Dynamic Systems: Lyapunov Theory Meets Branch-and-Bound

no code implementations27 Dec 2020 Sebastian A. Nugroho, Ahmad F. Taha

Sensor and actuator selection problems (SASP) are some of the core problems in dynamic systems design and control.

valid

Nonlinear Dynamic Systems Parameterization Using Interval-Based Global Optimization: Computing Lipschitz Constants and Beyond

1 code implementation25 Apr 2020 Sebastian A. Nugroho, Ahmad F. Taha, and Vu Hoang

Second, we utilize a derivative-free, interval-based global maximization algorithm based on branch-and-bound framework to numerically obtain the bounding constants.

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