Results 91 to 100 of about 2,976 (212)

The walking robot project [PDF]

open access: yes, 1991
A walking robot was designed, analyzed, and tested as an intelligent, mobile, and a terrain adaptive system. The robot's design was an application of existing technologies.
Bennett, M.   +3 more
core   +1 more source

Virtual Sensors For Advanced Controllers In Rehabilitation Robotics [PDF]

open access: yes, 2018
In order to properly control rehabilitation robotic devices, the measurement of interaction force and motion between patient and robot is an essential part. Usually, however, this is a complex task that requires the use of accurate sensors which increase
Cabanes Axpe, Itziar   +4 more
core   +4 more sources

On the generalized pantograph functional-differential equation

open access: yesEuropean 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
openaire   +1 more source

Electric Power Derivation From 25 kV AC Overhead Line Systems: A Solution for Electrified Railway Networks

open access: yesIET 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

The pantograph lift measurement method in overhead catenary system

open access: yesNihon Kikai Gakkai ronbunshu
Condition monitoring technology has advanced remarkably in recent years in various areas, including railways. Since the overhead catenary system and the pantograph in railway does not have enough redundancy, failures of the overhead catenary system or ...
Takayuki USUDA   +3 more
doaj   +1 more source

Stability results for 2D Navier-Stokes equations with unbounded delay [PDF]

open access: yes, 2018
Some results related to 2D Navier-Stokes equations when the external force contains hereditary characteristics involving unbounded delays are analyzed. First, the existence and uniqueness of solutions is proved by Galerkin approximations and the energy ...
Caraballo Garrido, Tomás   +2 more
core  

Numerical Algorithm for Nonlinear Delayed Differential Systems of $n$th Order

open access: yes, 2019
The purpose of this paper is to propose a semi-analytical technique convenient for numerical approximation of solutions of the initial value problem for $p$-dimensional delayed and neutral differential systems with constant, proportional and time varying
Rebenda, Josef, Šmarda, Zdeněk
core   +1 more source

Study on the Computational Model for Frequency‐Dependent Impedance of Rails Incorporating the Effects of Cross‐Sectional Geometry

open access: yesIET 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
wiley   +1 more source

Aerodynamic noise from a train pantograph

open access: yes, 2014
Many studies have shown that when the speed of high speed trains exceeds around 300km/h, aerodynamic noise becomes the most significant noise source. The pantograph, or current collector, is mounted on the top of the train and is therefore not shielded ...
Hu, Zhiwei   +3 more
core  

Availability Evaluation of Overhead Contact Lines Based on a Stochastic Colored Petri Nets Model

open access: yesIET 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

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