Genuine lab experiences for students in resource constrained environments: The RealLab with integrated intelligent assessment.

Laboratory activities are indispensable for developing engineering skills. Computer Aided Learning (CAL) tools can be used to enhance laboratory learning in various ways, the latest approach being the virtual laboratory technique that emulates traditional laboratory processes. This new approach makes it possible to give students complete and genuine laboratory experiences in situations constrained by limited resources in the provision of laboratory facilities and infrastructure and/or where there is need for laboratory education, for large classes, with only one laboratory stand. This may especially be the case in countries in transition. Most existing virtual laboratories are not available for purchase. Where they are, they may not be cost friendly for resource constrained environments. Also, most do not integrate any form of assessment structure. In this paper, we present a very cost friendly virtual laboratory solution for genuine laboratory experiences in resource constrained environments, with integrated intelligent assessment

Path planning algorithm for a car like robot based on Coronoi Diagram Method

The purpose of this study is to develop an efficient offline path planning algorithm that is capable of finding optimal collision-free paths from a starting point to a goal point. The algorithm is based on Voronoi diagram method for the environment representation combined with Dijkstra’s algorithm to find the shortest path. Since Voronoi diagram path exhibits sharp corners and redundant turns, path tracking was applied considering the robot’s kinematic constraints. The results has shown that the Voronoi diagram path planning method recorded fast computational time as it provides simpler, faster and efficient path finding. The final path, after considering robot’s kinematic constraints, provides shorter path length and smoother compared to the original one. The final path can be tuned to the desired path by tuning the parameter setting; velocity, v and minimum turning radius, Rmin. In comparison with the Cell Decomposition method, it shows that Voronoi diagram has a faster computation time. This leads to the reduced cost in terms of time. The findings of this research have shown that Voronoi Diagram and Dijkstra’s Algorithm are a good combination in the path planning problem in terms of finding a safe and shortest path

Analisis Rangkaian Pembagi Tegangan dan Perbandingan Hasil Simulasinya Menggunakan Simulator Offline

This paper reveals the voltage divider circuit to better understand the fundamental working principles in detail. The approach was simulated using popular offline simulators (i.e., Pr, CW circuit, and virtual mode, EWB, Mu, P, Ye, TS, QUCS, LTS, SI, and PhET). Two scenarios were carried out: measuring the output voltage (Vout) with known R1, R2, and DC source (Battery) as a voltage input (Vin), then looking for R1 and R2 using four different calculation methods to obtain Vout as expected. Afterward, the value of R1 and R2 were inserted into the simulation circuit to guarantee if the current Vout value matched the initial Vout. Finally, the simulation results were compared with the calculation results. All simulators provide an attractive GUI, capable of simulating voltage measurements with 100% accuracy in terms of DC analyses, which is DC voltage (except the CW software, which is only 98%), and can be entered in any resistor value (except Ye and PhET software). Surprisingly, the results of this study can provide insight for beginners to understand essential topics in electrical engineering studies, e.g., the circuit topology, fundamental theory, and working principle of a voltage divider circuit. Besides, the student will understand an offline electronic-based simulator suitable for measuring voltage parameters. Furthermore, they are expected to apply this circuit to various electronic circuit cases

Undergraduate students' perceptions of the use of simulation software through online learning in colleges of engineering during the covid-19 pandemic: A case study at al-Balqa applied university, Jordan.

Students at Al-Balqa' Applied University, Jordan, are being interviewed about their experiences with online simulation software during the Covid-19 pandemic. In this study, a descriptive method was employed. 667 undergraduate students were asked to fill out a 25-item questionnaire. During the Covid-19 epidemic, undergraduate students showed a modest level of proficiency in using simulation software via online instruction, according to the study's findings. Al-Balqa' Applied University undergraduate students' perspectives vary according to gender (in favor of females) and discipline, according to the findings (in favor of the Electrical engineering discipline.). Academic evaluation, on the other hand, does not show any statistically significant differences amongst pupils. As a result, there appears to be no statistically significant difference in academic evaluation across pupils (GPA). It's important to do more research like this one on simulation software implementation in higher education institutions, according to this study

Role of Simulation Tool in Enhancing Teaching and Learning of Information and Communication Technology: A Case Study

ABSTRAC

Practical simulation and modelling of lightning impulse voltage generator using marx circuit

Standard impulse waveform have similar characteristics as that of lightning strike and can be used for testing the strength of electrical equipment. For producing high voltage pulses Marx generator is the most popular and is most widely used method. This thesis describes the creation of a simulation circuit to match the output of a Marx Impulse Generator. In this project eight stages of standard Marx Impulse Voltage Generator were simulated and resulted impulse waves were recorded. The objective was to calculate the stray capacitance using standard formulas and embed that capacitance into the simulation circuit to adequately deliver a yield like that of the impulse generator. A genuine multi-staged impulse generator was utilized as the base. Eight distinctive levels of impulse voltage were tried, and the output waveforms were recorded. The simulation circuit was then subjected to a few cycles, conforming the capacitance qualities to achieve a yield as close as could be expected under the circumstances to that of the real generator. Finishes of the examination demonstrate that a successful simulation circuit could be made to give a yield that is near, yet not precisely that of, the genuine generator. In the exploration, a few zones of error were distinguished in the simulation that were not introduce in the simulation circuit. The entire simulations have been examined in the NI Multisim software. The simulation circuit could be utilized to figure out the front time, tail time, and peak voltage

Digital Pulse Width Modulation Generation Using 8051 for DC DC Buck Converter

The research on digital control of DC-DC converters is mainly focused on two areas. One is the methods to generate digital PWM (DPWM) signals to meet the output voltage requirement precisely. Various techniques have been developed to meet the requirement of output voltage and at the same time it is also necessary to get more resolution to increase precision. The other is to develop new control methods that can utilize the advantages of the digital controller so as to improve the dynamic performance of the switching power converters. The objective of this thesis is to study current techniques of DPWM generation and to develop new techniques using 8051 for low cost implementation. In this thesis a new way is proposed for PWM generation, which uses the Timers and Interrupts of 8051. Motivation behind selecting 8051 microcontroller is its low cost and ease of programming, despite its disadvantages, like low clock frequency (33 MHz for 89C51RD2, which in internally divided by 12), no inbuilt ADC or DAC. Initially different techniques are validated in NI Multisim environment and also the proposed method is validated on the same platform for a dc-dc buck converter. This thesis also compares the designed new approach with the delay line method of DPWM generation with simulation result. The delay line method is also implemented in 8051 for comparison with the new designed method

Virtual Electronics Laboratory for Visualized Education and Training

On-line education is utilized extensively and has been found to be effective in a multitude of subject areas, including engineering education. However, for on-line education to be fully effective in engineering education, a means must be developed to provide on-line students with laboratory experiences that achieve the same learning outcomes as face-to-face laboratories. To address this need, a pilot computer program, Project VELVET (Virtual Electronics Laboratory for Visualized Education and Training), for a virtual electronics laboratory is being developed. VELVET operates on Windows-based computers in a real-time environment. It presents to its user a virtual breadboard into which components may be inserted. A dc power supply and a signal generator are available to supply energy and signals to circuits, and measurements may be made with a virtual millimeters and a virtual oscilloscope. The algorithm and sample screen images of the program are presented in this thesis

Design and Development of Data Acquisition for Leakage Current at Electrical Tracking Test Turnitin cover nilai

eprints.undip.ac.id/7181