A Retrospective of Differential Evolution in Electromagnetics

Qing, Anyong

doi:10.1007/978-3-642-12869-1_3

Cited by 5 publications

(6 citation statements)

References 122 publications

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“…the corresponding array factor, AF Rc k (u, t) of the corrected pattern at k th order harmonic is expressed as pattern (AF Ref k (u, t)), the global search evolutionary optimization algorithm namely, DE [38,39] with DE/rand/1/bin strategy is used. To realize the patterns, the cost function is defined as…”

Section: Failure Correctionmentioning

confidence: 99%

“…Under the failure condition, the set switching parameters corresponding to the utilized switching pulse are properly tuned to correct the distorted patterns. To determine the optimum switching parameters for the corrected array patterns ; = R , T ) at k = 0 and closed to the desired reference pattern , the global search evolutionary optimization algorithm namely, DE [38, 39] with DE/rand/1/bin strategy is used. To realize the patterns, the cost function is defined asHere, g represents the iteration index of the iterative evolutionary algorithm; represents the optimization parameter vector.…”

Section: Theory and Problem Formulationmentioning

confidence: 99%

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Trapezoidal pulse-switching strategy for failure correction of multi-pattern time-modulated linear array

Mukherjee

Mandal

et al. 2022

Int. J. Microw. Wireless Technol.

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In this paper, a novel approach for simultaneously correcting multiple degraded patterns under the failure condition of time-modulated linear arrays is proposed. The approach is based on the use of trapezoidal pulse with non-zero rise/fall time to control the switching status of the radio frequency switches that enables ON-OFF keying modulation of the array elements. After deriving a closed form expression of harmonic power loss and through the in-depth analysis, it is explored that the proposed trapezoidal pulse, because of having non-zero rise/fall time, provides less undesired harmonic power loss as compared to the conventionally used rectangular pulse with ideally zero rise/fall time. With the aim of reconstructing the degraded patterns with improved directivity and suppressed higher sideband power, three pulse-switching strategies based on rectangular and trapezoidal pulse have been employed, and their comparative performances prove the superiority of the proposed approach.

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Section: Failure Correctionmentioning

confidence: 99%

Section: Theory and Problem Formulationmentioning

confidence: 99%

Trapezoidal pulse-switching strategy for failure correction of multi-pattern time-modulated linear array

Mukherjee

Mandal

et al. 2022

Int. J. Microw. Wireless Technol.

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“…As this algorithm is a member of evolutionary group so it has all the merits of these algorithms: strong ability of global searching, versatility to problem features [20].…”

Section: ∀I ∈ Nmentioning

confidence: 99%

Development of a Crop Cultivation and Water Reuse System

Das¹,

Majumder²

2017

IJAST

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“…Saling et al [15] highlighted the importance of probabilistic Design in avoiding rare event phenomena by computing failure analysis. Duan et al in their review [16] highlighted the role of differential evolution (DE) for Electromagnetic problem, but, Qing et al [17] found that though it shows the great promise in Electromagnetism because of its natural advantage over deterministic optimization algorithm, its application in Electromagnetism is seriously lagging behind application in other fields. Thus, as a tool, DE is not matures enough compared to established Genetic Algorithm and Evolution strategy.…”

Section: Literature Reviewmentioning

confidence: 99%

Design optimization of large gap single axis thrust magnetic bearing actuator

Dash

Rajan

2015

JAE

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Magnetic Bearing, especially Active Magnetic Bearing (AMB) is arguably most preferred bearing for the process dealing with highly reactive environment, high speed operation and where the process required least contamination. They are also being tried for Fly wheels and Wind generators. They continue to be evolved since last several decades. Quite a few processes like application of AMB in high temperature Liquid Sodium high temperature applications call for development of large-working-gap active magnetic bearings (AMB). Smooth operation of AMB depends on hypersensitive position stiffness and Current stiffness, which fluctuates due to differential-thermal-expansion induced air gap variation. So, large gap, necessitates flatter open loop position stiffness than that of contemporary magnetic actuators. In this work, a goal seeking optimization methodology is employed for double acting AMB system where a combination of higher (CRGO electrical steel) and lower saturating magnetic material (Mu metal) is used. A less variant position stiffness across the air gap was arrived at after getting optimized design variables constituting geometry and excitation current parameters. This investigation opens up a new way to attain position stiffness in AMB system which is less sensitive to positional variation of rotor in air gap.This paper proposes an innovative and first-of-its-kind bi-material core material with goal driven optimized magnetic actuator design which can afford to have air gap variation during operation.

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A Retrospective of Differential Evolution in Electromagnetics

Cited by 5 publications

References 122 publications

Trapezoidal pulse-switching strategy for failure correction of multi-pattern time-modulated linear array

Trapezoidal pulse-switching strategy for failure correction of multi-pattern time-modulated linear array

Development of a Crop Cultivation and Water Reuse System

Design optimization of large gap single axis thrust magnetic bearing actuator

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