Results 31 to 40 of about 844,475 (305)

A novel spherical actuator: Design and control [PDF]

open access: yes, 1997
The paper describes the design and control of a novel spherical permanent magnet actuator which is capable of two-degrees-freedom and a high specific torque. Based on an analytical actuator model, an optimal design procedure is developed to yield maximum
Howe, D., Jewell, G.W., Wang, J.B.
core   +1 more source

Static analysis on spherical magnetically suspending rotor based on finite element

open access: yesMATEC Web of Conferences, 2018
In this paper, the static mechanical properties of a spherical magnetically suspending rotor are studied based on the finite element analysis method. The structure of the spherical magnetically suspending rotor is designed.
Wang Weijie, Yuan Ren, Yin Zengyuan
doaj   +1 more source

3DOF Ultrasonic Motor with Two Piezoelectric Rings

open access: yesSensors, 2020
A novel design of a multiple degrees of freedom (multi-DOF) piezoelectric ultrasonic motor (USM) is presented in the paper. The main idea of the motor design is to combine the magnetic sphere type rotor and two oppositely placed ring-shaped piezoelectric
Vytautas Jūrėnas   +2 more
doaj   +1 more source

Supersymmetry and eigensurface topology of the spherical quantum pendulum [PDF]

open access: yes, 2015
We undertook a mutually complementary analytic and computational study of the full-fledged spherical (3D) quantum rotor subject to combined orienting and aligning interactions characterized, respectively, by dimensionless parameters $\eta$ and $\zeta ...
Friedrich, Bretislav, Schmidt, Burkhard
core   +2 more sources

Pseudo SU(3) shell model: Normal parity bands in odd-mass nuclei [PDF]

open access: yes, 2000
A pseudo shell SU(3) model description of normal parity bands in 159-Tb is presented. The Hamiltonian includes spherical Nilsson single-particle energies, the quadrupole-quadrupole and pairing interactions, as well as three rotor terms.
Akiyama   +34 more
core   +2 more sources

3-DOF Outer Rotor Electromagnetic Spherical Actuator

open access: yesInternational Journal of Automation Technology, 2015
Conventionally, many single-degree-of-freedom (single-DOF) actuators have been used to realize devices with multiple-degrees-of-freedom (multi-DOF). However, this makes their structures larger, heavier, and more complicated. In order to remove these drawbacks, the development of spherical actuators with multi-DOF is necessary. In this paper, we propose
Yusuke Nishiura   +2 more
openaire   +1 more source

Quantum Shape-Phase Transitions in Finite Nuclei [PDF]

open access: yes, 2006
Quantum shape-phase transitions in finite nuclei are considered in the framework of the interacting boson model. Critical-point Hamiltonians for first- and second-order transitions are identified by resolving them into intrinsic and collective parts ...
A. Leviatan   +12 more
core   +3 more sources

A computationally tractable version of the collective model [PDF]

open access: yes, 2003
A computationally tractable version of the Bohr-Mottelson collective model is presented which makes it possible to diagonalize realistic collective models and obtain convergent results in relatively small appropriately chosen subspaces of the collective ...
Arima   +37 more
core   +1 more source

Mixed lubrication analysis for sliding part between rotor and spherical valve plate of swash plate type piston pump

open access: yesNihon Kikai Gakkai ronbunshu, 2014
A mathematical model of rotor motion and an analysis model on mixed lubrication between the rotor and the spherical valve plate for a swash plate type piston pump have been presented in order to evaluate lubrication characteristics in the sliding part ...
Kazuhiko TANAKA, Yusuke FUJITA
doaj   +1 more source

Relativistic MHD with Adaptive Mesh Refinement [PDF]

open access: yes, 2006
This paper presents a new computer code to solve the general relativistic magnetohydrodynamics (GRMHD) equations using distributed parallel adaptive mesh refinement (AMR).
Anile A M   +19 more
core   +2 more sources

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