Hadi Addas | Zarqa University (original) (raw)

Papers by Hadi Addas

Research paper thumbnail of Zoomorphic Mobile Robot Development for Vertical Movement Based on the Geometrical Family Caterpillar

Computational Intelligence and Neuroscience, 2022

Research in robotics is one of the promising areas in mobile robot development, which is planned ... more Research in robotics is one of the promising areas in mobile robot development, which is planned to be implemented in extreme dangerous conditions of areas explored by humans. This article aims at developing and improving a prototype of zoomorphic mobile robots that are designed to repeat the existing biological objects in nature. The authors performed a detailed analysis on the structure and dynamics of the geometrical family caterpillar movement, which is passed on a practical design implemented to perform the dynamic movement on uneven vertical surfaces. Based on the obtained analysis, the design and kinematic scheme of the movement is developed. Also, the structural control scheme via the Internet technologies that allow carrying out remote control is presented in this paper, considering the dangerous mobile robot work zones. To test the recommended solutions, the authors developed detailed 3D printed models of the mobile robot constructions for the implemented hardware. The mod...

Research paper thumbnail of An Electrical Impedance Imaging System Towards Edge Intelligence for Non-Destructive Testing of Concrete

Tsinghua Science & Technology, May 31, 2024

In the construction industry, to prevent accidents, non-destructive tests are necessary and coste... more In the construction industry, to prevent accidents, non-destructive tests are necessary and costeffective. Electrical impedance tomography is a new technology in non-invasive imaging in which the image of the inner part of conductive bodies is reconstructed by the arrays of external electrodes that are connected on the periphery of the object. The equipment is cheap, fast, and edge compatible. In this imaging method, the image of electrical conductivity distribution (or its opposite; electrical impedance) of the internal parts of the target object is reconstructed. The image reconstruction process is performed by injecting a precise electric current to the peripheral boundaries of the object, measuring the peripheral voltages induced from it and processing the collected data. In an electrical impedance tomography system, the voltages measured in the peripheral boundaries have a non-linear equation with the electrical conductivity distribution. This paper presents a cheap Electrical Impedance Tomography (EIT) instrument for detecting impurities in the concrete. A voltage-controlled current source, a micro-controller, a set of multiplexers, a set of electrodes, and a personal computer constitute the structure of the system. The conducted tests on concrete with impurities show that the designed EIT system can reveal impurities with a good accuracy in a reasonable time.

Research paper thumbnail of Investigating and calculating the temperature of hot-spot factor for transformers

Indonesian Journal of Electrical Engineering and Computer Science

This article explores the measurement of temperature in transient states, utilizing the principle... more This article explores the measurement of temperature in transient states, utilizing the principles of heat transfer and thermal-electrical metaphor. The study focuses on the nonlinear thermal resistances present in various locations within a distribution transformer, while taking into account variations in oil physical variables and temperature loss. Real-time data obtained from heat run tests on a 250-MVA-ONAF cooled unit, conducted by the transformer manufacturer, is used to verify the thermal designs. The observations are then compared to the loading framework of the IEC 60076-7:2005 system. The findings of this research provide a better understanding of temperature measurement in transient states, particularly in distribution transformers, and can be applied to the design and development of more efficient and reliable transformer systems.

Research paper thumbnail of Impacts of integration of wind farms on voltage stability margin

International Journal of Electrical and Computer Engineering (IJECE), 2022

The current methods use conservative voltage based on the maximum wind speed with simultaneous oc... more The current methods use conservative voltage based on the maximum wind speed with simultaneous occurrence in peak loading conditions to determine the maximum size of the wind farm. Wind patterns never let the wind farm on the wind farm site produce its maximum capacity during hours of heavy loading conditions. A new method is presented in this research to determine the maximum size of wind farms including voltage stability margin (VSM) and wind patterns at the wind farm site in the size of a wind farm. This plan is a method to increase the maximum size of a wind farm with a limited wind generation option under certain conditions based on VSM. The proposed method is applied to the wind farm in the IEEE 14-bus network power system. The results of the new method show that the maximum size of wind farms increases when the system operates with intermittent wind control to maintain the voltage stability.

Research paper thumbnail of Impacts of integration of wind farms on voltage stability margin

International Journal of Electrical and Computer Engineering (IJECE)

The current methods use conservative voltage based on the maximum wind speed with simultaneous oc... more The current methods use conservative voltage based on the maximum wind speed with simultaneous occurrence in peak loading conditions to determine the maximum size of the wind farm. Wind patterns never let the wind farm on the wind farm site produce its maximum capacity during hours of heavy loading conditions. A new method is presented in this research to determine the maximum size of wind farms including voltage stability margin (VSM) and wind patterns at the wind farm site in the size of a wind farm. This plan is a method to increase the maximum size of a wind farm with a limited wind generation option under certain conditions based on VSM. The proposed method is applied to the wind farm in the IEEE 14-bus network power system. The results of the new method show that the maximum size of wind farms increases when the system operates with intermittent wind control to maintain the voltage stability.

Research paper thumbnail of Physical-layer network coding based on PUM turbo codes

This paper discusses physical-layer network coding based on PUM turbo codes. It was presented at ... more This paper discusses physical-layer network coding based on PUM turbo codes. It was presented at the third Mosharaka International Conference on Communications, Signals and Coding in 2009.

Research paper thumbnail of Performance Analysis of Node Cooperation with Network Coding in Wireless Sensor Networks

ABSTRACT In this paper, we propose and investigate a simple, low-complexity cooperative protocol ... more ABSTRACT In this paper, we propose and investigate a simple, low-complexity cooperative protocol that exploits network coding (NC)within a lossy wireless sensor network (WSN). The scenario under consideration is as follows: M sensor nodes send their information packet to a common destination node D over a wireless block-fading Rayleigh channels between users and each user and D, represented by a packet-level Finite State Markov Chain (FSMC) channel model. The traffic among nodes and destination can be significantly reduced resulting in energy savings if a node overhears and combines the packets from different nodes in a simple and deterministic way before it forwards them to the destination. The key problem we try to address is how to efficiently combine the packets at each node within the designed two stage cooperative NC protocol.

Research paper thumbnail of Zoomorphic Mobile Robot Development for Vertical Movement Based on the Geometrical Family Caterpillar

Computational Intelligence and Neuroscience, 2022

Research in robotics is one of the promising areas in mobile robot development, which is planned ... more Research in robotics is one of the promising areas in mobile robot development, which is planned to be implemented in extreme dangerous conditions of areas explored by humans. This article aims at developing and improving a prototype of zoomorphic mobile robots that are designed to repeat the existing biological objects in nature. The authors performed a detailed analysis on the structure and dynamics of the geometrical family caterpillar movement, which is passed on a practical design implemented to perform the dynamic movement on uneven vertical surfaces. Based on the obtained analysis, the design and kinematic scheme of the movement is developed. Also, the structural control scheme via the Internet technologies that allow carrying out remote control is presented in this paper, considering the dangerous mobile robot work zones. To test the recommended solutions, the authors developed detailed 3D printed models of the mobile robot constructions for the implemented hardware. The mod...

Research paper thumbnail of An Electrical Impedance Imaging System Towards Edge Intelligence for Non-Destructive Testing of Concrete

Tsinghua Science & Technology, May 31, 2024

In the construction industry, to prevent accidents, non-destructive tests are necessary and coste... more In the construction industry, to prevent accidents, non-destructive tests are necessary and costeffective. Electrical impedance tomography is a new technology in non-invasive imaging in which the image of the inner part of conductive bodies is reconstructed by the arrays of external electrodes that are connected on the periphery of the object. The equipment is cheap, fast, and edge compatible. In this imaging method, the image of electrical conductivity distribution (or its opposite; electrical impedance) of the internal parts of the target object is reconstructed. The image reconstruction process is performed by injecting a precise electric current to the peripheral boundaries of the object, measuring the peripheral voltages induced from it and processing the collected data. In an electrical impedance tomography system, the voltages measured in the peripheral boundaries have a non-linear equation with the electrical conductivity distribution. This paper presents a cheap Electrical Impedance Tomography (EIT) instrument for detecting impurities in the concrete. A voltage-controlled current source, a micro-controller, a set of multiplexers, a set of electrodes, and a personal computer constitute the structure of the system. The conducted tests on concrete with impurities show that the designed EIT system can reveal impurities with a good accuracy in a reasonable time.

Research paper thumbnail of Investigating and calculating the temperature of hot-spot factor for transformers

Indonesian Journal of Electrical Engineering and Computer Science

This article explores the measurement of temperature in transient states, utilizing the principle... more This article explores the measurement of temperature in transient states, utilizing the principles of heat transfer and thermal-electrical metaphor. The study focuses on the nonlinear thermal resistances present in various locations within a distribution transformer, while taking into account variations in oil physical variables and temperature loss. Real-time data obtained from heat run tests on a 250-MVA-ONAF cooled unit, conducted by the transformer manufacturer, is used to verify the thermal designs. The observations are then compared to the loading framework of the IEC 60076-7:2005 system. The findings of this research provide a better understanding of temperature measurement in transient states, particularly in distribution transformers, and can be applied to the design and development of more efficient and reliable transformer systems.

Research paper thumbnail of Impacts of integration of wind farms on voltage stability margin

International Journal of Electrical and Computer Engineering (IJECE), 2022

The current methods use conservative voltage based on the maximum wind speed with simultaneous oc... more The current methods use conservative voltage based on the maximum wind speed with simultaneous occurrence in peak loading conditions to determine the maximum size of the wind farm. Wind patterns never let the wind farm on the wind farm site produce its maximum capacity during hours of heavy loading conditions. A new method is presented in this research to determine the maximum size of wind farms including voltage stability margin (VSM) and wind patterns at the wind farm site in the size of a wind farm. This plan is a method to increase the maximum size of a wind farm with a limited wind generation option under certain conditions based on VSM. The proposed method is applied to the wind farm in the IEEE 14-bus network power system. The results of the new method show that the maximum size of wind farms increases when the system operates with intermittent wind control to maintain the voltage stability.

Research paper thumbnail of Impacts of integration of wind farms on voltage stability margin

International Journal of Electrical and Computer Engineering (IJECE)

The current methods use conservative voltage based on the maximum wind speed with simultaneous oc... more The current methods use conservative voltage based on the maximum wind speed with simultaneous occurrence in peak loading conditions to determine the maximum size of the wind farm. Wind patterns never let the wind farm on the wind farm site produce its maximum capacity during hours of heavy loading conditions. A new method is presented in this research to determine the maximum size of wind farms including voltage stability margin (VSM) and wind patterns at the wind farm site in the size of a wind farm. This plan is a method to increase the maximum size of a wind farm with a limited wind generation option under certain conditions based on VSM. The proposed method is applied to the wind farm in the IEEE 14-bus network power system. The results of the new method show that the maximum size of wind farms increases when the system operates with intermittent wind control to maintain the voltage stability.

Research paper thumbnail of Physical-layer network coding based on PUM turbo codes

This paper discusses physical-layer network coding based on PUM turbo codes. It was presented at ... more This paper discusses physical-layer network coding based on PUM turbo codes. It was presented at the third Mosharaka International Conference on Communications, Signals and Coding in 2009.

Research paper thumbnail of Performance Analysis of Node Cooperation with Network Coding in Wireless Sensor Networks

ABSTRACT In this paper, we propose and investigate a simple, low-complexity cooperative protocol ... more ABSTRACT In this paper, we propose and investigate a simple, low-complexity cooperative protocol that exploits network coding (NC)within a lossy wireless sensor network (WSN). The scenario under consideration is as follows: M sensor nodes send their information packet to a common destination node D over a wireless block-fading Rayleigh channels between users and each user and D, represented by a packet-level Finite State Markov Chain (FSMC) channel model. The traffic among nodes and destination can be significantly reduced resulting in energy savings if a node overhears and combines the packets from different nodes in a simple and deterministic way before it forwards them to the destination. The key problem we try to address is how to efficiently combine the packets at each node within the designed two stage cooperative NC protocol.