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IEEE Transactions on Industrial Informatics, 2020 The existing intelligent fault diagnosis methods of rotor-bearing system mainly focus on vibration analysis under steady operation, which has low adaptability to new scenes.
Haidong Shao +4 more
semanticscholar +1 more source
THE ROTOR MODEL AND COMBINATORICS [PDF]
International Journal of Modern Physics B, 2002 We examine the groundstate wavefunction of the rotor model for different boundary conditions. Three conjectures are made on the appearance of numbers enumerating alternating sign matrices. In addition to those occurring in the O (n = 1) model we find the number A V (2m + 1;3), which 3-enumerates vertically symmetric alternating sign matrices.
Batchelor, Murray +2 more
openaire +4 more sources
Friction, 2023 Wear topography is a significant indicator of tribological behavior for the inspection of machine health conditions. An intelligent in-suit wear assessment method for random topography is here proposed.
Tao Shao +4 more
doaj +1 more source
A Study on Bearing Dynamic Features under the Condition of Multiball–Cage Collision
Lubricants, 2022 Cage stability directly affects the dynamic performance of rolling bearing, which, in turn, affects the operating state of rotating equipment. The random collision between the rolling elements and the cage pocket is the main reason for cage instability ...
Shuaijun Ma +4 more
doaj +1 more source
Quantisation of the multidimensional rotor [PDF]
Brazilian Journal of Physics, 2001 We reconsider the problem of quantising a particle on the $D$-dimensional sphere. Adopting a Lagrangian method of reducing the degrees of freedom, the quantum Hamiltonian is found to be the usual Schr dinger operator without any boundary term. The equivalence with the Dirac Hamiltonian approach is demonstrated, either in the cartesian or in the ...
Abdalla, E., Banerjee, R.
openaire +5 more sources
Sound-Based Intelligent Detection of FOD in the Final Assembly of Rocket Tanks
Machines, 2023 The traditional method of relying on human hearing to detect foreign object debris (FOD) events during rocket tank assembly processes has the limitation of strong reliance on humans and difficulty in establishing objective detection records.
Tantao Lin +6 more
doaj +1 more source
Nonlinear Transient Modeling and Design of Turbocharger Rotor/Semi-Floating Bush Bearing System
Lubricants, 2017 This work presents the bearing design and analysis of radial semi-floating bush oil lubricated bearings for a typical industrial turbocharger configuration.
Jianming Cao +3 more
doaj +1 more source
Variable-speed tail rotors for helicopters with variable-speed main rotors [PDF]
, 2017 Variable tail rotor speed is investigated as a method for reducing tail rotor power, and improving helicopter performance. A helicopter model able to predict the main rotor and tail rotor powers is presented, and the flight test data of the UH-60A ...
Barakos, G.N., Han, D.
core +1 more source
Indagationes Mathematicae, 2016 We present and analyse a simple model for the twisting somersault. The model is a rigid body with a rotor attached which can be switched on and off. This makes it simple enough to devise explicit analytical formulas whilst still maintaining sufficient complexity to preserve the shape-changing dynamics essential for twisting somersaults in springboard ...
Sudarsh Bharadwaj +4 more
openaire +4 more sources
Helicopter tail rotor thrust and main rotor wake coupling in crosswind flight [PDF]
, 2010 The tail rotor of a helicopter with a single main rotor configuration can experience a significant reduction in thrust when the aircraft operates in crosswind flight. Brown’s vorticity transport model has been used to simulate a main rotor and tail rotor
Balch D. T. +9 more
core +1 more source