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In this paper some important issues are brought up with respect to the use of wide-area monitoring system for under-frequency load shedding protection. In order to understand them, some basic knowledge about the power-system frequency behavior is first given. The forecast of trends in future under-frequency protection development is provided from the authors' point of view, which appears be in the...
Modern mechanical engineering systems are primarily designed to perform a specific system process in an optimal manner. For this purpose, they use control systems that monitor and influence the process with the help of sensors and actuators. Changing control values or (physical) disturbances are recorded and considered by the control systems. Problems arise whenever the disturbances are not physical,...
This paper deals with the optimal fault-tolerant operation of a 5-phase permanent magnet (PM) brushless DC (BLDC) drive. In particular, the companion paper (Part I) proposes the optimization of the current supply to obtain the maximum power in healthy conditions and its analytical solution. In the present paper (Part II), by constraining the proposed model with healthy and fault specific conditions,...
There are many applications employing image processing and/or control algorithms. Video surveillance, visual inspection of manufactured goods are among the examples. Self — driven cars are today one of the hottest topic. Using powerful image processing, control and learning technologies, self-driven vehicles appears to be just around the corner. Another possible application are robots in charge of...
A novel discrete-time synthesis for WAN-based computer control of networked control systems with a class of nonlinear plants is developed. Such a networked control systems are assumed to comprise an affine nonlinear plant process to be controlled and a linear digital controller in presence of WAN induced time delays. It can be viewed as a typical hybrid control system with network-induced delays....
This paper is focused on exploring the fascinating ideas about complexity in systems science conjunction with the synergies of control, communication and computing via a certain overview. By no means attempts are made to give final answers on what the control of complex systems may comprise. Rather it is an essay-like exposition of personal visions of complexity and controlled complex network and...
Solvents are used in a large number of industries especially in cleaning and cosmetic. Solvents are known to be harmful to human health. Classification of solvent in a product is important to determine the level of hazard that can people faced. In this study, three different solvents, methanol, acetone, and chloroform, are used to obtain binary gas mixtures in a laboratory environment. A gas sensor...
Dance is an art consisting of sequences of movements. Its beauty comes from geometrically clean linearity, symmetry in movement phrasing, and balance in the rhythm. To make an industrial robot dance, synchronization of music with the dance is studied and simulated. Four basic patterns of movements are established using a modified Laban notation designed for an industrial robot. The beats of the music...
Today many users with their smart mobile devices enjoy the benefits of broadband Internet services. This is primarily enabled by pushing computing, control, data storage and processing into the cloud. However, the cloud encounters growing limitations, such as reduced latency, high mobility, high scalability and real-time execution in order to meet the computing and intelligent networking demands for...
This paper shows a case study of a partial discharge (PD) test in a 230kV/2000A circuit breaker that was performed in a substation. Two sorts of sensors were used: a high frequency current transformer (HFCT) installed in equipment's grounding conductor and an antenna that is used to estimate the location of discharge source. Partial discharge signatures obtained previously at the laboratory were used...
This paper concerns the problem of operating region enlargement for centrifugal pumps. A hybrid management system is described, which combines both the valve throttling and the pump speed adjustment at variable consumer's demands and piping conditions. Solution of the consumed power minimization problem is found and realized with the flexible energy management controller-oriented software. To provide...
Parallel Sequence Spread Spectrum (PSSS) is a physical layer (PHY) baseband technology that is well suited for mixed-signal transceiver implementation for high data rate wireless communication systems. Mixed signal baseband realization allows for easier implementation of the channel equalization function and eliminates the need for high speed data converters. System design and architecture of a mixed...
This paper presents a novel circuit implementation for overcurrent protection of low-dropout voltage regulators, that is able to limit the maximum current the regulator can source into the load to a value set by the user and to keep the current limit value fairly independent of process variation and output voltage, as well as maintaining its temperature drift over the wide temperature range of −50°C...
Over the top (OTT) video distribution is gaining momentum as many people have high speed internet access and an increased need for video and multimedia content absorption. On the other hand, the internet providers are also interested in monetizing the excess internet capacity that they provide to the end-users in a more efficient way. Digital television content can be very brittle in quality, depending...
As cloud computing industry adoption rate is increasing, service cost management and optimization are becoming one of the most important issues from the perspective of cloud users. This paper is looking into possibility of using information about application type and its resource usage profile in the process of identifying optimized service placement in cloud environments. Such placement should result...
Internet service providers are increasingly facing the growing demand for higher bandwidth to satisfy users demand. In the condition of overloaded, the web servers show delays in offering services until reaching total unavailability. There exist several approaches to deal with this problem, the core of them use the configuration of a web server in cluster, but offering the service as a single entity...
Physical exercising has always had an important impact on humans' health. Lack of motivation is one of the major reasons that keeps a person from exercising. To overcome this problem, new solutions are needed to provide weight watchers and fitness seekers motivation to exercise indoors. This paper presents iGym, a low cost and flexible system that enhances humans' workout experience. This system lets...
The trend of producing energy from Renewable Generation (ReGen) plants is greatly increasing. This leads to the objective of building future power generation system entirely based on renewable sources. Since the power output of ReGen plants, such as wind power plants (WPP), varies continuously and thereby the voltages in the distribution grid, an effective control system is required, to govern the...
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