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Title: Corridor guided transport system utilizing permanent magnet levitation

Abstract

The invention relates to a corridor guided transport system including a guided goods conveyance container utilizing permanent magnet levitation. The transport system of the invention eliminates the need for the wheel and track arrangement presently required by known and utilized conventional train systems and also required by some conventional magnetic levitation transport systems and, as a result, is safer to operate and maintain than either of these known transportation systems.

Inventors:
; ;
Publication Date:
Research Org.:
Department of the Interior, Washington, DC (United States)
OSTI Identifier:
85577
Application Number:
PAN: 8-408,797; TRN: 51812356
Assignee:
Department of the Interior, Washington, DC GRA; SCA: 012032; PA: GRA-95:12356; EDB-95:110294; SN: 95001416227
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 1995
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; MINE CARS; LEVITATION; LEVITATED TRAINS; MINE HAULAGE

Citation Formats

Geraghty, J.J., Poland, A.P., and Lombardi, J.A. Corridor guided transport system utilizing permanent magnet levitation. United States: N. p., 1995. Web.
Geraghty, J.J., Poland, A.P., & Lombardi, J.A. Corridor guided transport system utilizing permanent magnet levitation. United States.
Geraghty, J.J., Poland, A.P., and Lombardi, J.A. 1995. "Corridor guided transport system utilizing permanent magnet levitation". United States. doi:.
@article{osti_85577,
title = {Corridor guided transport system utilizing permanent magnet levitation},
author = {Geraghty, J.J. and Poland, A.P. and Lombardi, J.A.},
abstractNote = {The invention relates to a corridor guided transport system including a guided goods conveyance container utilizing permanent magnet levitation. The transport system of the invention eliminates the need for the wheel and track arrangement presently required by known and utilized conventional train systems and also required by some conventional magnetic levitation transport systems and, as a result, is safer to operate and maintain than either of these known transportation systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1995,
month = 7
}
  • The invention relates to a noncontact lateral control system for use in a levitation-type transport system. The noncontact lateral control system of the invention senses the lateral position of the container within the transit corridor relative to the transit corridor sidewalls during container movement and moves the container in the proper lateral direction to ensure that the center of the container is maintained in alignment with the center of the transit corridor.
  • This patent describes, in combination, a land vehicle having axially aligned ground engaging tractive wheels, and a drivetrain carried by the vehicle for the propulsion thereof. The drivetrain comprises: (a) a substantially fixed DC power source including at least one chemical battery, (b) transmission means including selectable multiple gear ratios, an input shaft and a mechanical differential operative to transfer torque to the wheels, (c) a single-phase self-synchronous permanent magnet motor including, (i) an elongated central shaft, (ii) a generally u-shaped frame assembly adapted for mechanical grounding the shaft to a relatively stationary portion of the vehicle, the shaft beingmore » secured to the frame proximate each end thereof, (iii) a stator assembly secured to the shaft and characterized by a plurality of outwardly directed integrally formed salient poles and associated bifilar-wound induction coils, and (iv) a rotor assembly rotatably disposed on the shaft and substantially enclosing the stator assembly, the rotor assembly comprising a cylindrical shell defining an inner surface.« less
  • Disclosed herein are systems and methods for generating a rotating magnetic field. The rotating magnetic field can be used to obtain rotating-field NMR spectra, such as magic angle spinning spectra, without having to physically rotate the sample. This result allows magic angle spinning NMR to be conducted on biological samples such as live animals, including humans.
  • A permanent magnet-less synchronous system includes a stator that generates a magnetic revolving field when sourced by an alternating current. An uncluttered rotor is disposed within the magnetic revolving field and spaced apart from the stator to form an air gap relative to an axis of rotation. The rotor includes a plurality of rotor pole stacks having an inner periphery biased by single polarity of a north-pole field and a south-pole field, respectively. The outer periphery of each of the rotor pole stacks are biased by an alternating polarity.
  • Method and system for controlling the start of a permanent magnet machine are provided. The method allows to assign a parameter value indicative of an estimated initial rotor position of the machine. The method further allows to energize the machine with a level of current being sufficiently high to start rotor motion in a desired direction in the event the initial rotor position estimate is sufficiently close to the actual rotor position of the machine. A sensing action allows to sense whether any incremental changes in rotor position occur in response to the energizing action. In the event no changesmore » in rotor position are sensed, the method allows to incrementally adjust the estimated rotor position by a first set of angular values until changes in rotor position are sensed. In the event changes in rotor position are sensed, the method allows to provide a rotor alignment signal as rotor motion continues. The alignment signal allows to align the estimated rotor position relative to the actual rotor position. This alignment action allows for operating the machine over a wide speed range.« less