Zobrazeno 1 - 10
of 396
pro vyhledávání: '"A. S. Elwakil"'
Autor:
M. Elnawawy, F. Aloul, A. Sagahyroon, A. S. Elwakil, Wafaa S. Sayed, Lobna A. Said, S. M. Mohamed, Ahmed G. Radwan
Publikováno v:
IEEE Access, Vol 9, Pp 21085-21093 (2021)
The spread of epidemics and diseases is known to exhibit chaotic dynamics; a fact confirmed by many developed mathematical models. However, to the best of our knowledge, no attempt to realize any of these chaotic models in analog or digital electroni
Externí odkaz:
https://doaj.org/article/ce51a40ed24749a3a8f3943ff22f0c8e
Autor:
R. A. Mahmoud, E. S. Elwakil
Publikováno v:
Journal of Electrical Systems and Information Technology, Vol 11, Iss 1, Pp 1-21 (2024)
Abstract A polarity identification is very important for operation of transformers, measurement and protection equipment, where it is useful in analyzing of transformer connections and operation as well as testing of protective systems. Moreover, it
Externí odkaz:
https://doaj.org/article/bbb4c09a83884414981eb852a8080668
Three-phase balance relay using numerical techniques experimentally verified on synchronous machines
Autor:
R. A. Mahmoud, E. S. Elwakil
Publikováno v:
Journal of Electrical Systems and Information Technology, Vol 11, Iss 1, Pp 1-30 (2024)
Abstract In this paper, a multifunction three-phase balance relay based on normalized correlation coefficients is proposed to detect and estimate imbalances and perturbations in synchronous machine output signals. Furthermore, fresh definitions of im
Externí odkaz:
https://doaj.org/article/f0c1b607fad5456bbd5bf1c71a1bb965
Publikováno v:
Complexity, Vol 2017 (2017)
Two novel nonlinear circuits that exhibit an all-positive pinched hysteresis loop are proposed. These circuits employ two NMOS transistors, one of which operates in its triode region, in addition to two first-order filter sections. We show the equiva
Externí odkaz:
https://doaj.org/article/7f681ce489cc43c68bddaeaa9a9db668
Autor:
Julia Nako, Georgia Tsirimokou, Costas Psychalinos, Ahmed S. Elwakil, Brent J. Maundy, Panagiotis Bertsias
Publikováno v:
IEEE Access, Vol 12, Pp 160064-160073 (2024)
A systematic method for realizing filters with a Gaussian impulse response is introduced in this work. For this purpose, the Laplace transform is used to obtain the transfer function which corresponds to the Gaussian impulse response. Since this tran
Externí odkaz:
https://doaj.org/article/6647a05293c34a06a7036ded9ffd1523
Publikováno v:
IEEE Access, Vol 12, Pp 14040-14049 (2024)
A novel kind of non-integer order bilinear filters, named double-order bilinear filters, is introduced in this work. They are based on the employment of two non-integer orders, offering the maximum design flexibility in comparison with their fraction
Externí odkaz:
https://doaj.org/article/6b4f9f0697a840e9aea9e6eb219ee04c
Publikováno v:
IEEE Access, Vol 11, Pp 118606-118614 (2023)
Complex-order controllers are a generalized version of conventional integer-order controllers and are known to offer greater flexibility, better robustness, and improved system performance. This paper discusses the design of complex-order PI/PID cont
Externí odkaz:
https://doaj.org/article/1bdffafad58f45bf9c689b51ae4cc44e
Publikováno v:
IEEE Access, Vol 11, Pp 116846-116859 (2023)
Non-integer order filters can be derived from a generalized structure presented in this work. More specifically, fractional-order and power-law filters of single- or double-order are special cases of non-integer order filters with three degrees of fr
Externí odkaz:
https://doaj.org/article/312f25bb4bd04763acc5896669f013fd
Publikováno v:
IEEE Access, Vol 11, Pp 43205-43215 (2023)
Higher-order fractional filters with fully controllable frequency characteristics are realized in this work, after fitting the filter’s magnitude response data using a minimum-phase state-space model. Subsequently, rational integer-order transfer f
Externí odkaz:
https://doaj.org/article/cc5f3906db5d47f0b434d2c4f03c7b4b
Autor:
Stavroula Kapoulea, Abdullah Yesil, Costas Psychalinos, Shahram Minaei, Ahmed S. Elwakil, Panagiotis Bertsias
Publikováno v:
IEEE Access, Vol 9, Pp 145977-145987 (2021)
Low-pass and high-pass non-integer order shelving filter designs, which are suitable for acoustic applications, are presented in this work. A first design is based on a standard fractional-order bilinear transfer function, while a second one is based
Externí odkaz:
https://doaj.org/article/8aba46b56f934ab587ae8298735d6d89