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This paper is concerned with the fault diagnosis of three-phase full-bridge rectifier. A new approach is proposed to extract the fault features in both frequency and time domain. The integrated features are used for the training of an LM-BP neural network, which is then applied for the fault classification. The simulation experiments are implemented on the fault diagnosis model built in MATLAB/Simulink,...
A Simulink based model for a centrifugal pump power estimation is proposed. The new model consists of the pump, pipeline, pressure regulation valve, fluid reservoir and metering equipment. The model is developed to provide the possibility of power calculation during both throttling and speed control. To evaluate the model, a series of tests have been conducted. Tests proved that the designed model...
Electric drives are a key technology for reducing energy consumption of industrial processes, for wind power generation and for enabling electric transportation. It has been observed that almost half of the global electrical energy is consumed by electric motor drives. The university course about modeling and control of electric drives must give the required knowledge to the students hence they are...
In this work-in-progress paper, the topic of fractional-order modeling and control in education is discussed. The study of fractional calculus, fractional-order systems (FOS) and the applications thereof have been of interest to many scientists and engineers as evidenced in the recent exponential growth in the number of corresponding research publications worldwide. One particular area of study is...
Mobile robotics became an important knowledge area. Led by the technological advances, the life spectancy increases, rising the senior citizens ratio. At the same hand, the cities growth turn on a more intense and dangerous traffic. Autonomous mobile robots can help in these situations, but still have a jeopardized application. In this sense, this work presents a contribution to development of nonholonomic...
Impairment of motor function of the lower extremities is a common result of stroke or spinal cord injury due to the harm caused to the spinal column. Rehabilitation using a lower extremity exoskeleton for therapy purposes has been examined to improve motor function of the affected limb. PID controller is the most widely recognized types of feedback controller in control strategy. The simplicity and...
Ranked Based Fingerprinting uses only ordering indices instead of actual Wi-Fi RSS values in order to make the algorithm insensitive to devices. A key component of the RBF algorithm is a similarity measure which is used to compare and find the closest ranked fingerprints. Previous papers study a few similarity measures; here we study 49 similarity measures in a test with a benchmark with publicly...
Thermoelectric generators (TEGs) are used for the direct conversion of heat energy into electricity. Given that there is an extreme concentration of heat present on house roofs, the application of TEGs on these locations is feasible. This study involves the modeling of thermoelectric generators on house roofs through the use of simulations and an actual prototype. Simulations were done using the matrix...
In the paper, we propose a new method, namely Random Filtering Mapping (RFM), through which the peak-to-average power ratio (PAPR) of the Generalized frequency division multiplexing (GFDM) signal is reduced. Then, the improved signal is transmitted through the Radio Over Fiber (ROF) system of Single SideBand (SSB) modulation and optical fiber of 60Km. The simulation results show that the PAPR of the...
This paper focuses on the enhancement of power oscillation stability of the grid connected wind power system by designing a power oscillation damping (POD) controller for a Static Var Compensator (SVC). The proposed SVC is located at the interconnected bus of power system to supply reactive power to the grid. An Adaptive Neural Fuzzy Inference System (ANFIS) technique is used to contribute adequate...
Nowadays, the Kalman filter is being extensively studied in power system modeling and analysis because of its advantages such as high frequency noise filtering effect, multifold fast and accurate performance, etc. In this paper, therefore, the authors proposed a signal processing method using Kalman filter to process voltage and current signals in the modeling of distance protection relay. Then an...
The paper presents the method of digital modelling of process of switching on by vacuum switch in capacitive circuits. Currently, there are few descriptions of vacuum switch models used for capacitive circuits switching on. More often researchers focus on vacuum switch models used for switching of the circuits (also previous works of the Authors) and even more often models used for switching of the...
This paper presents the design and implementation of a position controller for a rotary platform driven by a DC motor through state feedback. The main objective in this development is to make an electromechanical system and position control for a rotary platform using a 12 volts DC motor with quadrature encoder. The design and development stages were executed using computational tools such as Matlab...
There is a big error in the classic DV-Hop localization algorithm in average hop distance and unknown point coordinates. We propose an improved DV-Hop location algorithm, by improving the average hop distance and introducing a checkout algorithm in the second and third stages of the classic DV-Hop localization algorithm, to improve the position accuracy. The MATLAB simulation shows that in the same...
A future soldier carries a large gear weight in the battle because of increasing in the number of electronic devices such as communication equipment, sensors, or battlefield situational displays. These devices are necessary to save his life and ensure the victory in the combat. So, the wearable energy harvesting technology is the optimal solution to provide the energy to the soldier's electronic devices...
Modeling and numerical simulation of the triple effect desalination plant coupled with thermo-vapor compressor is performed. The desalination system is an industrial application of desalination seawater used in the Tunisian Chemical Group (GCT), which located in Tunisia. The plant composed in three subsystems; effects, condenser, and compressor; which presented their mass and energy balances. The...
The smart grid revolution is still rather a new comer into the current era, which explains the lack of software programs that support and simulate the smart grid principles. However, to address the challenges of the existing power grid, the new concept of Smart Grid (SG) has emerged. The SG combines electrical grids and communication infrastructures to form an intelligent electricity network working...
This paper presents examples of simulated experiments using Matlab as demonstration to students to make them grasp the fundamentals of one parameter of antenna. That antenna parameter is considered in this work is radiation pattern of different schemes of antennas which been investigated. Students can easily learn how to deals with these softwares in order to learn at their own time and pace. This...
PV modules output performances are affected by change in irradiance, temperature level and partial shading condition. Therefore, it is necessary to improve output power of PV module to achieve maximum power. This paper presents MATLAB based Simulink model in which flyback converter is used as MPPT converter. The advantage of having this scheme is that switching losses are less as flyback converter...
Cam follower mechanisms are used for obtaining complex motion outputs at follower end with different profile curve inputs at cam end. The kinematic behaviour of follower establishes basic suitability of cam for a given application and it is decided by the cam profile curves, which is main input of cam follower system. In this paper synthetic curves, that are generated parametrically through a set...
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