Results 81 to 90 of about 4,032 (228)
Kinematics of pantograph masts
, 2009 This paper deals with the kinematics of pantograph masts. Pantograph masts have widespread use in space application as deployable structures. They are over constrained mechanisms with degree-of-freedom, evaluated by the Grübler–Kutzback formula, as less ...
Pandiyan, R +2 more
core +1 more source
The Pantograph Equation in the Complex Plane
Journal of Mathematical Analysis and Applications, 1997 The subject matter is focused on two functional differential equations. First of them is the pantograph equation with involution on the complex plane: \[ y'(z)=\sum_{k=0}^{m-1} \left[ a_k y(\omega^k z) + b_k y(r \omega^k z) + c_k y'(r \omega^k z) \right] , \] where \(a_k, b_k, c_k \in \mathbb{C}, k= 0, 1, \dots , m-1,\) are given, \(r \in (0,1)\), and \
Derfel, G., Iserles, A.
openaire +1 more source
机车电传动, 2022 Because straddle monorail vehicles run on rubber wheels, the contact status between the pantograph and the catenary is hard to control, and the abrasion on the current-receiving sliding block on the pantograph is serious.
ZHANG Yuejun +4 more
doaj
On Pantograph Integro-Differential Equations
Journal of Integral Equations and Applications, 1994 The authors study the initial value problem for pantograph integro- differential equations of the form \[ y'(t) = a y(t) + \int^ 1_ 0 y(qt) d \mu (q) + \int^ 1_ 0 y'(qt) d \nu (q),\;t > 0, \quad y(0) = y_ 0, \tag{1} \] where \(a\) is a complex constant, \(\mu (q)\) and \(\nu (q)\) are complex-valued functions of bounded variation on \([0,1]\). Denote \(
Iserles, Arieh, Liu, Yunkang
openaire +2 more sources
Fatigue analysis of catenary contact wires for high speed trains [PDF]
, 2011 The fatigue fracture is one of the most critical failures which may occur on the high speed network because it is undetectable and it has a huge impact on traffic disruption.
MAITOURNAM, Habibou +4 more
core
, 2017 Toto téma jsem si vybrala, že je mi blízké strojírenství, kde se pantograf vyskytuje, ale i že mám ráda fyziku z které má pantograf páky. Cílem mojí práce je vyrobit použitelný pantograf pro výuku, dále vyrobitelný v podmínkách školních dílen s běžnými ...
Knetlová, Anna
core
Pantograph/Catenary contact formulations
, 2016 In this investigation, the pantograph/catenary contact is examined using two different formulations. The first is an elastic contact formulation that allows for the catenary/panhead separation and for the analysis of the effect of the aerodynamic forces,
Kulkarni, Shubhankar +5 more
core +1 more source
Study of Pantograph Catenary Dynamic Interaction Performance for Beijing Metro Line 14
机车电传动, 2015 The pantograph catenary performance of Beijing metro line 14 was analyzed and studied. Pantograph catenary working principle of the measurement system was introduced, and combined with the test data, the distribution of contact force, contact force’s the
ZHANG Huiqing +3 more
doaj
THE AERODYNAMIC CHARACTERISTICS OF THE PANTOGRAPH WHEN THE TRAIN PASSES THROUGH THE TUNNEL
, 2017 The aerodynamic force acting on the pantograph by the airflow is obviously unsteady and has a certain vibration frequency and amplitude, while the high-speed train passes through the tunnel.
Guo DL(郭迪龙) +5 more
core
Pantograph Spark Fault Detection using YOLO
, 2021 Pantograph-catenary is now the dominant form of current collection for modern electric trains because they can be used for higher voltages. Faults in pantograph-catenary systems threaten the operation and safety of railway transportation. They need to be
Jin, Ding, Bright, Amenya
core