Obaid Alshammari

ORCID: 0000-0002-2236-1355
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Advanced Control Systems Optimization
  • Advanced Battery Technologies Research
  • Electric Vehicles and Infrastructure
  • Hybrid Renewable Energy Systems
  • Smart Grid Energy Management
  • Adaptive Control of Nonlinear Systems
  • Fault Detection and Control Systems
  • Solar Radiation and Photovoltaics
  • Stability and Control of Uncertain Systems
  • Energy and Environment Impacts
  • Photovoltaic System Optimization Techniques
  • Numerical methods for differential equations
  • Electric Motor Design and Analysis
  • Sensorless Control of Electric Motors
  • Advanced Control Systems Design
  • Neural Networks Stability and Synchronization
  • Fuel Cells and Related Materials
  • Microgrid Control and Optimization
  • Matrix Theory and Algorithms
  • Chaos control and synchronization
  • Solar Thermal and Photovoltaic Systems
  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Islanding Detection in Power Systems
  • Wireless Body Area Networks
  • solar cell performance optimization

University of Ha'il
2018-2024

Universiti Sains Malaysia
2018-2020

This paper presents a single-objective function optimization method for the optimal sizing and cost of hybrid energy storage system (HESS) that integrates lithium-ion batteries (LIB) supercapacitors (SC) electric vehicle (EV) applications. The study introduces comprehensive framework EV modeling, incorporating simulated data to enhance accuracy. A key achievement involves adapting modified–WLTC driving cycle, iteratively employed in simulations accurately capture spectrum power profiles...

10.1016/j.rineng.2024.102358 article EN cc-by-nc Results in Engineering 2024-06-13

Fuzzy theory is widely studied and applied. This article introduces an adaptive control scheme for a class of non-linear systems with Markov jump switching. The introduced supposes that the system submitted to external disturbances under imperfect premise matching. By using discrete-time Takagi–Sugeno fuzzy models, sliding mode observer-based utilized estimate unmeasured states system. We build two switching manifolds disturbance observer systems. Then, linear matrix inequality-based...

10.3390/math10183309 article EN cc-by Mathematics 2022-09-12

The continuous stirred tank reactor (CSTR) tends to reveal unstable severe nonlinear behavior when the operating level changes. As investigated in an earlier work, hard nonlinearity nature of CSTR originates from multiple probable sets states for same reaction under identical ongoing inlet conditions. previous work concluded, and this paper will discuss, that processes with dynamic trajectories involve a degrading control performance whenever measured process variable evolves away designed...

10.1109/access.2019.2948019 article EN cc-by IEEE Access 2019-01-01

The process of controlling a Flexible Joint Robot Manipulator (FJRM) requires additional sensors for measuring the state variables flexible joints. Therefore, taking elasticity into account adds lot complexity as all must be taken during control process. This paper proposes nonlinear observer that controls FJRM, without requiring equipment states. equations are derived in detail FJRM where nonlinearity, order three, is considered. Takagi–Sugeno Fuzzy Model (T-SFM) technique applied to...

10.3390/electronics11101569 article EN Electronics 2022-05-13

The outstanding performance of modern gas turbine power plants requires an efficient and robust control strategy in order to recover the losses caused by undesirable effects instabilities related their operation.Also, these can be cause unstable dynamic behaviour during full-load partial load operation unplanned shutdown state.Hence, choosing right improve this type machine increasing its efficiency up 60%.This paper proposes implementation innovative based on a generalized predictive...

10.24846/v31i3y202208 article EN Studies in Informatics and Control 2022-09-30

This paper tackles the control problem of nonlinear disturbed polynomial systems using formalism output feedback linearization and a subsequent sliding mode design. aims to ensure asymptotic stability an unstable equilibrium point. The class under investigation has equivalent Byrnes–Isidori normal form, which reveals stable zero dynamics. For case modeling uncertainties and/or process dynamic disturbances, conventional linearizing strategies may fail be efficient. To design robust strategy,...

10.3390/app11062612 article EN cc-by Applied Sciences 2021-03-15

We present a new family of ninth‐order hybrid explicit Numerov‐type methods, effectively utilizing only eight stages, for solving the special second‐order initial value problem. After applying number simplifying assumptions, we arrive to reduced set order conditions. Then, derive an optimal method with constant coefficients that requires one less stage than standard methods found in literature use nine stages at this moment. Numerical tests are conducted using quadruple precision arithmetic...

10.1002/mma.10448 article EN Mathematical Methods in the Applied Sciences 2024-09-09

Abstract This work is interested in studying the vibrations’ stability gas turbines, compared to a dynamic model of Jeffcott rotor, parameters turbine will be estimated for purpose developing mathematical which points out behavior rotor virtue data actual vibration measurements. The addition geometric nonlinearities vibrations unveils supercritical Hopf bifurcation, unstable modes are repulsed towards stable limit cycle small radius. measurements and analyzes were performed on Solar TITAN...

10.2478/scjme-2022-0013 article EN cc-by-nc-nd Strojnícky časopis/Journal of Mechanical Engineering 2022-11-01

Employee attrition, defined as the voluntary resignation of a subset company’s workforce, represents direct threat to financial health and overall prosperity firm. From lost reputation sales undermining long-term strategy corporate secrets, effects employee attrition are multidimensional and, in absence thorough planning, may endanger very existence It is thus impeccable today’s competitive environment that company acquires tools enable timely prediction leave room either for retention...

10.3390/math11061506 article EN cc-by Mathematics 2023-03-20
Coming Soon ...