ABSTRACT Artificial intelligence is the study of computer or microcontrollers ability to perform task which is currently done by human. For instance, when there is an outage of a certain power supply in a particular illuminating lighting device. In that case intelligence emergency light is an electronic circuit that controls automatically the security lighting of an industrial layout according to the ambient level of lighting. In the field of security, security lighting is often used as a pre...
ABSTRACT A digitally controlled light dimmer circuit is based on the principle of power control using thyristor. The switch enables light from an electric bulb to be raised from full brilliance down or up to a high range of luminance. Owning to its construction, adequate conservation of energy is achieved. The circuit is made in various patterns depending on the manufacturer. Some have a rotary knob; some have milled edged control while others have a depressing switch or side...
ABSTRACT This seminar focuses on a low cost DC motor speed control system using a microcontroller logic pulse-width modulation [pwm] controller to control brushless DC Motor. In a digital controller of brushless DC Motor, the control accuracy is of a high level, and it has a fast response time. Here a microcontroller of 8-bit type (80CL580) will be used as the systems core controller in other to acquire an accurate logic control algorithm. The DC motor speed control has found vast application...
Abstract Reliable electricity supply is essential for development. As a result, demand for electricity has continued to increase globally, occasioned by the fact that electricity is highly portable and can be transformed from one form to another to meet needs. In Nigeria and most developing countries, electricity supply from the public utility is not only insufficient but highly erratic. The effect of this is adverse on critical and sensitive infrastructure that depend on uninterrupted power ...
ABSTRACT Maximum power point tracking of a polycrystalline Photovoltaic (PV) cell using an Optimized Adaptive Differential Conductance (OADC) technique was proposed in this work. This technique enhances the optimum power transfer from PV panel to the load by reducing the tracking latency and increasing convergence efficiency and speed unlike the conventional Incremental conductance. In this research work, current at maximum power point and voltage at maximum power point can be calculated with...
ABSTRACT The International Telecommunication Union (ITU) has directed some countries of the world to migrate from analogue to digital broadcasting service before June 17, 2015. This transition has many challenges which have been approached in many ad hoc ways by several countries. This study is aimed at formulating a model that could measure the degree of success of the digital transition programme at any stage of the process. It uses control engineering approach, particularly the state varia...
ABSTRACT In the study of the influence of saliency ratio (L/L) on the performance of a synchronous reluctance generator (SRG), this project investigates two typical generator rotor designs: Generator with cage and without cage otherwise known as cage and cageless rotor respectively. A special attention had been paid to the possible rotor geometries of synchronous reluctance machine, SRM. This ratio can directly influence our insight into the machine’s potential abilities. From the studies o...
ABSTRACT This work presented an open loop variable voltage variable frequency (V/F) control of three phase induction motor for an electric vehicle drive. The major advantage of v/f is the ease of implementation. 6 Simulation and practical implementation of the project was carried out using sequential logic circuit for the control of the three phase inverter. Also included in the design is a 120V to 600V boost converter that increases the battery supply voltage to be able to supply the 420V in...
ABSTRACT Over the years, healthcare institutions have relied on one or a combination of medical record number (MRN), demographics and issued documents such as name, sex, date of birth, social security number, and identity cards as patient identifiers. But all those have been proven unsuitable and inefficient as patient identifiers due to one or more of the following drawbacks: non-uniqueness, possessiveness, inability to establish the true identity of a patient, and limitedness of applicabili...
ABSTRACT Asynchronous Transfer Mode (ATM) of transmission is designed as a Broadband Integrated Services Digital Network (B-ISDN) transfer mode that supports a wide range of traffic classes with diverse flow characteristics. ATM guarantees different quality of service (QoS) demands placed on a network by different services (traffic types). The above powerful feats could be well achieved in ATM network with the application of an efficient and effective network resource management system. This ...
ABSTRACT The line of sight communication between an orbiting LEO satellite and its Ground Station is time constrained by duration of visibility and number of visible passes in a day. In Equatorial region like Nigeria, the average duration is short and number of passes is very few. In most cases, the satellite size is small and therefore power generated on-board is also small, consequently the downlink budget is power constrained. Transmission bandwidth is also constrained by Regulations and n...
ABSTRACT Internet is a huge technology that has brought life to computer and its applications. Most forms of information management and data sharing are done using the internet. The World Wide Web has made this possible. With a browser running on your PC, you can get connected to the entire world. The Internet has been used in different aspects of life most especially in the area of education. Web portal is that area in which the huge resources available on the Internet are being tapped. A we...
TABLE OF CONTENT APPROVAL PAGE.............................................................................................................................................. iii DECLARATION................................................................................................................................................... iv CERTIFICATION............................................................................................................................................... v...
ABSTRACT This work modified an existing lead-acid battery charging system by developing and simulating the conventional lead-acid battery and the fuzzy logic control of the lead-acid battery charging systems. The fuzzy logic system is developed using Mamdani inference system in Matlab toolbox and Simulink, and consequently employed in controlling the 12 conventional charging system adopted. The output voltage of the battery is controlled using matrix laboratory (MATLAB) in creating Fuzzy Infe...
ABSTRACT Interior Permanent Magnet (IPM) motor is widely used for many industrial applications and has relatively high torque ripple generated by reluctance torque. Since the configuration of the stator has great influence on reluctance torque, different stator configuration is necessary to improve the torque performance of IPM motor. Natural variable modeling and performance comparison of Interior Permanent Magnet Motor with Concentrated winding (CW), Short pitched and Full pitched distribut...