The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a method of GPS-track data processing and analysis which is aimed at obtaining the tangential and normal acceleration and the elevation angle data of a vehicle driving over its entire route with respect to time. The method comprises an algorithm which eliminates the position reading errors of the GPS system and improves the accuracy of the results. The data produced by this proposed...
This paper discusses a simple and efficient method of determining the maximum performance torque-speed characteristic for an induction motor drive. The proposed method considers the voltage and current constraints of the inverter supply for the drive. The mathematical description of the motor in DQ reference frames was adapted to build a model applicable for numeric calculation. It has been shown...
The further penetration of renewable sources in the grid requires the implementation of energy storages in order to smooth out the variability and intermittent nature of renewables. This paper looks at the possibilities for a storage solution to meet an unprecedented situation of having no power input from renewables or an outage from grid sources for five consecutive days in the highest demand period...
Aircraft propeller performance is significantly reduced when tip speeds become sonic causing the maximum attainable airspeed of the vehicle to be limited by the propeller diameter. There are also performance losses attributable to miniature Unmanned Aerial Vehicles as the propeller to hub diameter ratio is reduced. The research conducted indicated that re-arranging a Brushless DC Motor and propeller...
This paper presents a modified Petri nets simulation algorithm applied as an engine for a logic simulator in digital integrated circuit design. The simulator uses an event-driven algorithm and eliminates the delta delay which occurs in the majority of modern simulation algorithms. The algorithm has been tested for the logic simulation of combinational digital circuits and demonstrated more accurate...
This paper discusses analysis of an insulated-metal-substrates structure of a printed circuit board in terms of the temperature management of p-n junction of LEDs mounted on the structure's surface. The structure material and surface area are used for the heat transfer between the junction and the ambient surroundings. The heat dissipation has been simulated for conductor layer thicknesses in the...
This paper discusses the Espressif Systems latest product ESP32 designed for Internet of Things and embedded system related projects. The ESP32 is a low-cost, low-power system on a chip series of microcontrollers with Wi-Fi and Bluetooth capabilities and a highly integrated structure powered by a dual-core Tensilica Xtensa LX6 microprocessor. This paper provides a comparative analysis of the ESP32...
This paper discusses an adaptive algorithm to control a magnetorheological fluid vibration isolator operating under varying frequency of the vibration source. The algorithm provides automatic tuning of the isolator properties by controlling the viscosity of magnetorheological fluid in the throttle channels. This ensures efficient damping and vibration protection at the main harmonic of a varying vibrational...
This paper describes the development of an undergraduate and a post graduate course on Small Unmanned Aircraft (SUA). Few emerging technologies provide the potential for such a diverse application of knowledge as SUA which are more commonly referred to as “Drones”. They are being used for civil purposes in a growth business sector predicted to be worth billions of pounds over the next 10 years. They...
The study discusses the design principles of instructional laboratory equipment applied for practical investigations of electric drive control. The laboratory workstations comprise of two-motor hardware systems where each motor is controlled by a real-time DSP board. A control structure under test is assembled at the software level using a number of control elements, which is then compiled into a...
This paper discusses the implementation of a real-time model of a switched reluctance motor drive for which the parameters of its magnetisation curve are represented by the data in a look-up table. A method of cubic interpolation has been applied for the look-up table approximation in order to provide a high accuracy and realistic performance of the modelled motor drive. The model structure has been...
The ability to assess an area for the potential of different renewable energies is governed by a wide range of technical, topographic and environmental variables. This paper discusses modelling these differing constraints for renewable energy potential and then to visualise results on an interactive map. A layered GIS is used with the UK as a location test area. The results compared different renewable...
The paper discusses the modelling and development of an energy management system applied for a domestic building. The model has been created to determine energy requirements and takes into account the building fabric and associated energy losses. A number of scenarios were investigated using the model to demonstrate the energy and cost savings. The energy control system is developed to ensure that...
This paper presents the details of software development and implementation of a simulation model to be used for performance analysis of the control applied for management of a plug-in electric vehicles charging network. The model is designed to provide an evaluation of the tested control algorithms in terms of efficiency and stability operation. Apart from the control algorithm evaluation the model...
This paper investigates the future of Vehicle-to-Grid technologies to be used in the UK in 2030 using the method of cross impact analysis. The paper describes the procedure of the cross impact matrix generation conducted to produce a multiplicity of scenarios of Vehicle-to-Grid futures. Three consistent scenarios (fossil, average and green) have been chosen for further development, interpretation...
The paper discusses the topology optimisation of wireless networks using a brute force algorithm. In order to reduce the computational complexity of the algorithm the multi-thread application has been implemented to conduct the optimisation procedure. The efficiency of the algorithm was verified using an example task where topology of a wireless network has been optimised under various criteria.
The Synchronous Reluctance Motor has received much attention in recent years as a very promising solution for electric drives in the near future. This paper presents a real-time model of the motor to be implemented into a software environment used for DSP control system development including debugging. The model is used in laboratory based investigations in academia in order to analyse the performance...
This paper discusses a method for detection and localisation of the insulation faults in electrical equipment distributed along the body of electric and hybrid electric vehicles. At the beginning of the fault detection procedure it is required that the vehicle powertrain be shut-down. The method is based on measurement and comparison of leakage currents in every device in the electrical powertrain...
This paper discusses a simple and cheap PV emulator based on a linear power supply that does not require a source of light to conduct laboratory experiments. The emulator has been designed to underpin students' understanding the properties of PV cell V-I characteristics and the ways to maximise the output power learned from lectures, tutorial and self-studies. The emulator has been built using “on...
Predefined heater parameters are involved in self-tuned temperature control for plastic moulding. However the heater system transfer function depends on many external parameters, such as barrel filling level, type of plastic etc. This paper discusses a recursive least-square estimation of plastic moulding heater parameters identification. The real heaters have been estimated by recursive least-square...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.