Results 11 to 20 of about 125,093 (294)

Analytical modelling of No‐load magnetic field for equivalent poles of a new type of double‐stator PM poles spherical motor

open access: yesIET Electric Power Applications, 2022
A double‐stator swing rotating permanent magnet spherical motor (SR‐PMSM) is designed, which can realize rotation, swing and spiral motion, and is used in the multi‐degree‐of‐freedom motion fields of industrial robot joints, torque gyroscopes, panoramic ...
Qing Chen   +6 more
doaj   +1 more source

A novel spherical ultrasonic motor with wire stators and measuring torque and preload via a new method

open access: yesScientific Reports, 2023
The present study introduces a multi-degree-of-freedom (MDOF) ultrasonic motor, which is capable of driving a spherical rotor using spiral wire stators and a piezoelectric stack actuator. Wire stators and piezoelectric stack actuators enable the proposed
Seyed Hassan Jahantab   +3 more
doaj   +1 more source

Analytical calculation of magnetic field of double‐stator permanent magnet spherical motor considering cogging effect and edge effect

open access: yesIET Electric Power Applications, 2022
A new type of double‐stator permanent magnet spherical motor (DSSRPMSM) is proposed. Compared with most existing spherical motors, this motor uses a large number of stator iron cores, which can generate larger magnetic flux density and significantly ...
Qing Chen   +7 more
doaj   +1 more source

Analysis of vibration characteristics of spherical bearing of three-degree-of-freedom motor with liquid suspension

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
Based on the liquid suspension three-degree-of-freedom motor, the three-degree-of-freedom dynamic model of spherical bearing is established. The spatial distribution of the radial electromagnetic force is calculated.
Zheng Li, Feihong Yue, Qunjing Wang
doaj   +1 more source

Self-propulsion through symmetry breaking [PDF]

open access: yes, 2013
In addition to self-propulsion by phoretic mechanisms that arises from an asymmetric distribution of reactive species around a catalytic motor, spherical particles with a uniform distribution of catalytic activity may also propel themselves under ...
de Buyl, Pierre   +2 more
core   +2 more sources

Design and Optimization of a Magnetically Levitated Inductive Reaction Sphere for Spacecraft Attitude Control

open access: yesEnergies, 2019
The inductive reaction sphere (RS) brings the benefit of simple, economical, and miniaturized design, and it is capable of multi-DOF torque generation. Thus, it is a suitable choice for the angular momentum exchange actuator in attitude control of micro ...
Liming Yuan   +6 more
doaj   +1 more source

Design and Simulation of Novel 3-DOF Spherical Voice Coil Motor

open access: yesActuators, 2021
Multi-DOF motion is realized in the eyes and joints of robots mostly through the combination of multiple one-degree-of-freedom (1-DOF) motors. However, this results in reduced efficiency, a large volume, reduced response speed, and inaccurate positioning.
Yi-Hsuan Lin   +2 more
doaj   +1 more source

Design and Control of a Three-Coil Permanent Magnet Spherical Motor

open access: yesEnergies, 2018
The permanent magnet (PM) spherical motor has been subject to growing interest from the scientific community due to its potential for applications in distinct areas, particularly in robotics, prosthetics, satellite control, sensors or camera systems ...
Kleymilson N. Souza   +3 more
doaj   +1 more source

Development of spherical motor (2nd report, Rotor posture detection and feed-back control)

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Spherical motor is a multi-degrees of freedom actuator which can be rotated in various directions. However, the control method of the completely arbitrary direction was not fully established in the conventional research. This study develops a controlling
Nagayoshi KASASHIMA   +2 more
doaj   +1 more source

A Miniature Flapping Mechanism Using an Origami-Based Spherical Six-Bar Pattern

open access: yesApplied Sciences, 2021
In this paper, we suggest a novel transmission for the DC motor-based flapping-wing micro aerial vehicles (FWMAVs). Most DC motor-based FWMAVs employ linkage structures, such as a crank-rocker or a crank-slider, which are designed to transmit the motor’s
Seung-Yong Bae   +2 more
doaj   +1 more source

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