United States agencies involved with national security are concerned about the vulnerability of the North American electric power grid to electronic intrusions, commonly known as cyber attacks. Several studies have identified changing socio-economic conditions that increase the probability of an electronic, computer-based attack being launched against a utility or substation, causing regional a...

Objective(s): Since the electric field is the main driving force in electrospinning systems, the modeling and analysis of electric field distribution are critical to the nanofibers production. The aim of this study was modeling of the electric field and investigating the various parameters on polyacrylonitrile (PAN) nanofibers morphology and diameter. Methods:</st...

Increased concerns for energy grid cybersecurity has lead to the development of compliance requirements that must be evaluated by utilities. The North American Electric Reliability Council (NERC) has created Critical Infrastructure Protection (CIP) requirements for all cyber assets supporting the bulk energy system [17]. This research explores whether the methodologies and tools commonly used f...

The requirements to system and software development tools brought up by the automotive industry differ from the requirements that other customers have. The important catchwords here are heterogeneity of suppliers, tools, technical background of the engineers, and – partially resulting from the just mentioned – the overall complexity of the systems that are built up. There are multiple suppliers...

Modern manufacturing systems are automated machines that perform the required tasks. The electric motors are perhaps the most widely used energy converters in the modern machine-tools and robots. These motors require automatic control of their main parameters (position, speed, acceleration, currents). With the help of an example, a DC motor system, the use of MATLAB/Simulink for comprehensive s...

• Chipping, sledging and hammering on metal, stone or concrete • Use of manual, pneumatic and power impact tools • Caulking, brushing and grinding • Drilling, scaling and scraping soldering and casting hot metals • Handling acids, caustics and creosoted materials • Gas welding, cutting and brazing • Drilling overhead • In environments of excessive dust • Electric arc welding and cutting, and ot...

This article describes the development of a computer system for Physics education in high school elaborated by a multidisciplinary team (Electric Engineering, Physics, Education and Visual Arts).For development of this software it was elaborated a pedagogical design based on principles of meaningful learning, including techniques of Virtual Reality that allow to the interaction with simulation ...

An optimal control benchmark is presented and discussed. The benchmark is optimal transient control of a nonlinear four state three control model of a diesel-electric powertrain and constructed in such a manner that it is available in several versions to be of interest for developers of optimal control tools at different levels of development. This includes with and without time as a parameter ...

This paper presents a versatile, Matlab-based simulation and analysis code for electric power systems. The code was created for basic research and designed from a control/dynamical systems perspective. Full advantage was taken of Matlab’s inherent cell arrays, structures, vectorizedcalculations, ODE solvers with event handling and complex arithmetic. Design features that make the code easy to u...