The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Antonino Cardella - One of the best experts on this subject based on the ideXlab platform.
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Technical challenges in the construction of the steady-state stellarator Wendelstein 7-X
Nuclear Fusion, 2013Co-Authors: H. S. Bosch, T. Andreeva, T. Bluhm, Victor Bykov, T. Brauer, R C Wolf, D. Birus, H. Braune, Jürgen Baldzuhn, Antonino CardellaAbstract:The next step in the Wendelstein stellarator line is the large superconducting device Wendelstein 7-X, currently under construction in Greifswald, Germany. Steady-state operation is an intrinsic feature of stellarators, and one key element of the Wendelstein 7-X mission is to demonstrate steady-state operation under plasma conditions relevant for a fusion power plant. Steady-state operation of a fusion device, on the one hand, requires the implementation of special technologies, giving rise to technical challenges during the design, fabrication and assembly of such a device. On the other hand, also the physics development of steady-state operation at high plasma performance poses a challenge and careful preparation. The electron cyclotron resonance heating System, Diagnostics, experiment control and data acquisition are prepared for plasma operation lasting 30 min. This requires many new technological approaches for plasma heating and Diagnostics as well as new concepts for experiment control and data acquisition. © 2013 IAEA, Vienna.
P F Ribeiro - One of the best experts on this subject based on the ideXlab platform.
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Bridging the gap between signal and power
Ieee Signal Processing Magazine, 2009Co-Authors: Math H. J. Bollen, M.v. Ribeiro, Mark F. Mcgranaghan, Irene Yu-hua Gu, Peter A Crossley, Surya Santoso, P F RibeiroAbstract:Signal processing has been used in many different applications, including electric power Systems. This is an important category, since a wide variety of digital measurements is available and data analysis is required to deliver diagnostic solutions and correlation with known behaviors. Measurements are taken at numerous locations, and the analysis of data applies to a variety of issues in 驴 power quality (PQ) and reliability 驴 power System and equipment Diagnostics 驴 power System control 驴 power System protection. This article focuses on problems and issues related to PQ and power System Diagnostics, in particular those where signal processing techniques are extremely important. PQ is a general term that describes the quality of voltage and current waveforms. PQ problems include all electric power problems or disturbances in the supply System that prevent end-user equipment from operating properly. Examples of voltage and current variations that can result in PQ problems include voltage interruptions, long- and short-duration voltage variations, steady-state research opportunities that use the measured voltages and currents to indicate possible equipment and System problems (referred to as equipment Diagnostics).
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Bridging the gap between signal and power
IEEE Signal Processing Magazine, 2009Co-Authors: Math H. J. Bollen, M.v. Ribeiro, Mark F. Mcgranaghan, Irene Yu-hua Gu, Peter A Crossley, Surya Santoso, P F RibeiroAbstract:This article focuses on problems and issues related to PQ and power System Diagnostics, in particular those where signal processing techniques are extremely important. PQ is a general term that describes the quality of voltage and current waveforms. PQ problems include all electric power problems or disturbances in the supply System that prevent end-user equipment from operating properly.
Nencho G. Nenov - One of the best experts on this subject based on the ideXlab platform.
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Application of wavelet transform to train spring System Diagnostics
2009 32nd International Spring Seminar on Electronics Technology, 2009Co-Authors: Georgi D. Geshev, Emil N. Dimitrov, Nencho G. NenovAbstract:The paper examines the train spring System Diagnostics problem. The rail disturbances have stochastic nature. This allows acquisition of data containing useful information. Real-time data have been collected during the normal operation. Different data processing methods have been applied, among which the wavelet transform has shown the most relevant and reliable information. Data processing program has been developed for MATLABreg numeric environment. Data processing determines the damper System condition parameters. The logarithmic damping decrement is the main parameter.
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Application of wavelet transform to train spring System Diagnostics
2009 32nd International Spring Seminar on Electronics Technology, 2009Co-Authors: Georgi D. Geshev, Emil Dimitrov, Nencho G. NenovAbstract:The paper examines the train spring System Diagnostics problem. The rail disturbances have stochastic nature. This allows acquisition of data containing useful information. Real-time data have been collected during the normal operation. Different data processing methods have been applied, among which the wavelet transform has shown the most relevant and reliable information. Data processing program has been developed for MATLAB® numeric environment. Data processing determines the damper System condition parameters. The logarithmic damping decrement is the main parameter.
S.m.i. Adham - One of the best experts on this subject based on the ideXlab platform.
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Linking diagnostic software to hardware self test in telecom Systems
IEEE Communications Magazine, 1999Co-Authors: S.m.i. Adham, K. Brough, B. Ecroyd, S. Foster, P. SoongAbstract:This article presents a novel approach to telecom System design that links hardware structural testing to System Diagnostics software. Issues related to access of the hardware test features in the System are discussed. Linking the built-in self-test to diagnostic software reduces software complexity while increasing diagnostic accuracy. Furthermore, the use of structural test features in a routine diagnostic test permits subcritical faults to be detected and recorded in nonvolatile memory, thus facilitating failure analysis. It can then be seen that the superior test coverage, fault resolution, and flexibility that access to hardware test features gives, will be beneficial in improving overall System quality and reliability.
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ITC - A new hardware fault insertion scheme for System Diagnostics verification
Proceedings of 1995 IEEE International Test Conference (ITC), 1995Co-Authors: B. Nadeau-dostie, H. Hulvershorn, S.m.i. AdhamAbstract:A new fault insertion method to help debug diagnostic software of telecommunications Systems is described. The method makes use of boundary scan to inject multiple and un-correlated faults in a telecom System carrying traffic. Both hardware and software implementation aspects are discussed. The new method allows the use of structural test as part of Diagnostics software to locate faults.
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A new hardware fault insertion scheme for System Diagnostics verification
Proceedings of 1995 IEEE International Test Conference (ITC), 1995Co-Authors: B. Nadeau-dostie, H. Hulvershorn, S.m.i. AdhamAbstract:A new fault insertion method to help debug diagnostic software of telecommunications Systems is described. The method makes use of boundary scan to inject multiple and un-correlated faults in a telecom System carrying traffic. Both hardware and software implementation aspects are discussed. The new method allows the use of structural test as part of Diagnostics software to locate faults.
H. S. Bosch - One of the best experts on this subject based on the ideXlab platform.
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Technical challenges in the construction of the steady-state stellarator Wendelstein 7-X
Nuclear Fusion, 2013Co-Authors: H. S. Bosch, T. Andreeva, T. Bluhm, Victor Bykov, T. Brauer, R C Wolf, D. Birus, H. Braune, Jürgen Baldzuhn, Antonino CardellaAbstract:The next step in the Wendelstein stellarator line is the large superconducting device Wendelstein 7-X, currently under construction in Greifswald, Germany. Steady-state operation is an intrinsic feature of stellarators, and one key element of the Wendelstein 7-X mission is to demonstrate steady-state operation under plasma conditions relevant for a fusion power plant. Steady-state operation of a fusion device, on the one hand, requires the implementation of special technologies, giving rise to technical challenges during the design, fabrication and assembly of such a device. On the other hand, also the physics development of steady-state operation at high plasma performance poses a challenge and careful preparation. The electron cyclotron resonance heating System, Diagnostics, experiment control and data acquisition are prepared for plasma operation lasting 30 min. This requires many new technological approaches for plasma heating and Diagnostics as well as new concepts for experiment control and data acquisition. © 2013 IAEA, Vienna.
