Results 51 to 60 of about 3,058 (150)
Magnetic bearings: Fifty years of progress [PDF]
Magnetic bearings are just beginning to be flown in spacecraft systems, but their development spans more than 50 years. The promise of completely noncontacting, unlubricated rotating systems operating at speeds substantially beyond the range of ...
Swann, Michael K.
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Energy harvesting from train vibrations
, 2013 In this paper, linear mechanical oscillators are designed to harvest energy from train-induced vibrations. The harvested energy could be used, for example, to charge sensors mounted on the rail track for structural health monitoring.
Brennan, M.J. +3 more
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, 2009 An actuator for moving a load has a frame forming a race between two surfaces thereof, at least two elements joined together by at least one flexible member, the elements and the at least one flexible member being disposed between the two surfaces of the
Vranish, John M.
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Spacecraft Dynamics and Control Program at AFRPL [PDF]
A number of future DOD and NASA spacecraft such as the space based radar will be not only an order of magnitude larger in dimension than the current spacecraft, but will exhibit extreme structural flexibility with very low structural vibration ...
Das, A. +2 more
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Counteracting Rotor Imbalance in a Bearingless Motor System with Feedforward Control [PDF]
In standard motor applications, traditional mechanical bearings represent the most economical approach to rotor suspension. However, in certain high performance applications, rotor suspension without bearing contact is either required or highly ...
Dever, Timothy +4 more
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A Micromachined Permalloy Magnetic Actuator Array for Micro Robotics Assembly Systems [PDF]
, 1995 Arrays of permalloy magnetic actuators have been studied for the use as precision micro robotics assembly systems. The actuator arrays have been tested for lifting and moving silicon and glass chips. The actuator unit consists of a permalloy plate 1 mm x
Ho, Chih-Ming +5 more
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Dynamic Deformation Behaviors of the Levitation Electromagnets of High-Speed Maglev Vehicle Negotiating a Sharp Horizontal Curve. [PDF]
Sensors (Basel), 2023 Yu Q, Li X, Shao Q, Han T, Zhao C, He F.
europepmc +1 more source
MEMS-based, phase-shifting interferometer [PDF]
, 2009 Provided herein are optical devices fabricated to include a reflective surface, actuators and stress-relieving structures.
Choo, Hyuck +4 more
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Levitation Performance of Two Opposed Permanent Magnet Pole-Pair Separated Conical Bearingless Motors [PDF]
In standard motor applications, rotor suspension with traditional mechanical bearings represents the most economical solution. However, in certain high performance applications, rotor suspension without contacting bearings is either required or highly ...
Dever, Timothy +4 more
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NASA patent abstracts bibliography: A continuing bibliography. Section 1: Abstracts (supplement 25) [PDF]
s are provided for 102 patents and patent applications entered into the NASA scientific and technical information system during the period January 1984 through June 1984.
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