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A new digital control method for permanent magnet synchronous motor based on deadbeat control and FPGA based hardware controller is proposed. Using the discrete time model of PMSM, deadbeat control law is derived via a model inverse solution. The superior calculation capability of FPGA realize the ideal digital control feedback system without any sampling compensation method. The verification of the...
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Previous work on rhythm in speech signal has attempted to quantify rhythm metrics and classify languages accordingly into different rhythm classes. These attempts have met with more or less success; new studies conducted on some varieties and regional dialects provide results that are not consistent with their corresponding rhythm class languages. In this work, we try to explain previous results by...
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This paper presents the analysis of the impact of weather conditions on the maximum electricity demand in Qatar during the whole year 2012. It points out the maximum daily air temperature as the most influential climate (meteorological) parameter. Correlation between maximum daily temperature and maximum daily electricity demand are also indicated and analyzed. It is noticed that there is a linear...
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The performance of Overhead Lines (OHLs) in the Western Region of the Emirate of Abu Dhabi has the highest contribution to the distribution network reliability indices of Abu Dhabi Distribution Company (ADDC). Over the past seven years, the OHL's interruption accounted for an average share of 70% of both regional unplanned HV SAIDI and SAIFI. The transient faults of those interruptions has the major...
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A new feature extraction method is presented in this paper. It is modification to our previous work where we have extracted Multidimentional local features (MDLF). We name the new feature as Multi-Directional Local Feature with moving average(MDLF-Mavg). MDLF-Mavg is based on three-point linear regression and three point moving average. Linear regression is applied on horizontal (time axis) that captures...
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With the recent rapid development in the field of multispectral face imaging, the use of image fusion has emerged as a new and important research area. Many studies have attempted to improve the performance of face recognition by fusing the infrared (IR) and visible face images, yet few comparison studies have been conducted to examine which fusion method is preferable over another. In this paper,...
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Easy Path Wavelet Transform (EPWT), a wavelet based compression technique that averages in adaptive neighborhoods of image intensity points, is utilized for the sparse representation of two-dimensional data. EPWT, when applied upon images, operates along the permutations of original image indices exploiting the local correlations in an uncomplicated manner. The highly correlated array of function...
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Integration of distributed generations (DGs) to electrical power systems is now being increasingly applied to act as an auxiliary source of energy with the main power feeder. For the nowadays trend of relying on the renewable energy resources as solutions for environmentally sustainable energy production, Photovoltaic (PV) generators — which are considered a type of inverter-based distributed generators...
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This paper presents small-disturbance stability studies of the interconnected power systems of the Sultanate of Oman and the State of the United Arab Emirates. The two systems are interconnected through the existing 220 kV double circuit transmission line between Oman and Abu Dhabi leading to a rather longitudinal structure power system. The objective of the paper is to assess the inter-area oscillation...
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This research paper is devoted for discussing a Vision-Based Collision Avoidance System that aims to provide the driver with a “third eye” to help him/her to detect obstacles and estimate distance between them and the host vehicles. It is based on a monocular approach of image processing that has one camera, which continuously captures images of the frontal view of the vehicle. Then the captured images...
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This paper addresses the challenges and opportunities electricity-demand growth and management respectively bring. It presents an overview of energy-efficiency initiatives being implemented in the Emirate of Abu Dhabi and how the Regulation & Supervision Bureau (the Bureau) supports and leads some of these, such as demand side management. This paper looks in particular at the role regulatory frameworks...
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This invited paper aims at reviewing the current status of Engineering education in the GCC countries and proposing a few guidelines for reform and improvement. The principles applied to this process have been developed by the author over the years and they arose from experience in several leading universities in France and Australia, as well as more recent experiences in universities in the UAE and...
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In sensor networks, consensus is a procedure to enhance the local measurements of the sensors with those of the surrounding nodes, and leads to a final agreement about a common value. The question here is how we can achieve the the consensus in a large network containing some faulty nodes. In this paper, we present distributed binary consensus algorithm (BCA) over the wireless sensor networks (WSN)...
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WiFi networks carrying IPv6 traffic with Proxy-based mobility support are to considered here. The performance of the handover function is first tested through the analysis of the effects of the packet size and inter-arrival times. Then, the sequence of events occurring during the handover period are scrutinized to observe the drawbacks that led to the obtained results. Finally, some suggestions are...
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The contribution focus on the subsurface real time monitoring techniques and early warning approaches dedicated to stability control of soil, civil engineering works and exploration of geophysics parameters. The electronic devices described are state-of-the-art geotechnical in-place instrument for stability control and differential monitoring of rocks, structures, in casing or borehole, designed mainly...
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In this paper, the problem of simultaneous fault detection and control (SFDC) for an autonomous unmanned underwater vehicle (AUV) is considered. An H∞ formulation of the SFDC problem using a dynamic observer is developed. A single module designated as the detector/controller is designed where the detector is a dynamic observer and the controller is a state feedback controller based on the dynamic...
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This paper explores the employment of inductive power transfer and data transfer (IPDT) for charging of electric vehicles (EV). The main objective of this paper spans the analysis and development of the inductive power transfer (IPT) design, and the practical implementation of the system prototype. The IPT typically consists of two parts; the transmitter and the receiver part. The recitified DC at...
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Assembly lines are sequential manufacturing processes, consisting of various stages at which parts are added to the product in a planned manner in order to create the finished product much faster than by handcrafting methods, and embodies the principle of the division of labor. At a multinational company in Dubai, an assembly line for pressure transmitters has been recently set up. This manufacturing...
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Recent growth in wireless devices such as smart phones, tablet computers, ipads and other electronic devices made the use of radio frequency spectrum omnipresent. The widespread of wireless devices has raised health concerns due to the possible malign effects of electromagnetic radiations on the human body, and especially on the brain due to its proximity with the hand-held radio devices. These radiations...
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A 12-pulse converter is often used in medium voltage applications. The major drawbacks of these converters are the Total Harmonic Distortion (THD) of the input current, and low power factor. These drawbacks can be treated by compensation techniques such as passive or Active Power Filter (APF). In this paper, a three-winding transformer (star/tapped-star/delta) with an APF connected to the secondary...
