Results 61 to 70 of about 353 (182)
IET Control Theory &Applications, Volume 19, Issue 1, January/December 2025.To address the issues of unbalanced traction and unstable operation of the train caused by uneven wear, this paper presents a fixed‐time synergetic control‐based solution focusing on the electrical speed synchronization control of multi‐interior permanent magnet synchronous motor (IPMSM) traction system.
Deqing Huang +3 more
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Efficient results on Hilfer pantograph model with nonlocal integral condition
Alexandria Engineering Journal, 2023 The optimistic plan of this work reveals the solvability conditions of Hilfer fractional pantograph integrodifferential equations of type 0≤q2≤1 and order ...
Kottakkaran Sooppy Nisar
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On the balanced pantograph equation of mixed type
Ukrains’kyi Matematychnyi ZhurnalUDC 517.9 We consider the balanced pantograph equation (BPE) y ′ ( x )
Derfel, G., van Brunt, B.
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Rapid Coupling Prediction for Compact GNSS Arrays via Graph Transformer
Electronics Letters, Volume 61, Issue 1, January/December 2025.The design of compact GNSS antenna arrays requires rapid evaluation of mutual coupling effects, which conventional full‐wave simulations fail to deliver due to excessive computational costs. This letter proposes a graph transformer model that predicts coupling matrices in real time. By hybridizing the local perception of graph isomorphism network (GIN)
Xiangjun Li +5 more
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Controllability of pantograph-type nonlinear non-integer order differential system with input delay
Alexandria Engineering JournalOne of the most famous classes of differential equations is the pantograph equation, which is a unique kind of functional differential equation with proportional delay.
Irshad Ahmad +4 more
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IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.Decarbonizing rail transport in response to global warming is fundamental to achieving a net zero transportation system. Along with increased passenger mobility and network electrification initiatives, significant connectivity between the train and infrastructure is needed to underpin operational communications and safety, information exchange, and ...
Yljon Seferi +3 more
wiley +1 more source
IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.In addressing the issue of electromagnetic interference in railway environments, research into the coupling pathways, amplitude distribution patterns, and attenuation characteristics of such interference is crucial for identifying practical solutions. Rails, a common channel for signaling and traction power supply systems, play a pivotal role in anti ...
Shaotong Chu +2 more
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Availability Evaluation of Overhead Contact Lines Based on a Stochastic Colored Petri Nets Model
IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.Due to their nonbackup characteristics and constant exposure to outdoor conditions, the performance of overhead contact lines (OCLs) will gradually degrade over time and further result in equipment defects or frequent failures. These issues significantly impact system availability and incur substantial repair costs.
Jingheng Zhou +4 more
wiley +1 more source
On the generalized pantograph functional-differential equation
European Journal of Applied Mathematics, 1993 The generalized pantograph equation y′(t) = Ay(t) + By(qt) + Cy′(qt), y(0) = y0, where q ∈ (0, 1), has numerous applications, as well as being a useful paradigm for more general functional-differential equations with monotone delay. Although many special cases have been already investigated extensively, a general theory for this equation is lacking–its
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IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.In this manuscript, we proposed physics‐informed surrogate model, called FENet, for the first time to solve the interaction of pantograph‐catenary system. In recent years, much progress has been achieved in PCS modelling solutions. Existing solutions, however, suffer from two significant limitations: 1) An urgent concern arises regarding the ...
Wenping Chu +3 more
wiley +1 more source