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Title: Position sensor for linear synchronous motors employing halbach arrays

Abstract

A position sensor suitable for use in linear synchronous motor (LSM) drive systems employing Halbach arrays to create their magnetic fields is described. The system has several advantages over previously employed ones, especially in its simplicity and its freedom from being affected by weather conditions, accumulated dirt, or electrical interference from the LSM system itself.

Inventors:
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1166012
Patent Number(s):
8917086
Application Number:
13/186,271
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Jul 19
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING

Citation Formats

Post, Richard Freeman. Position sensor for linear synchronous motors employing halbach arrays. United States: N. p., 2014. Web.
Post, Richard Freeman. Position sensor for linear synchronous motors employing halbach arrays. United States.
Post, Richard Freeman. Tue . "Position sensor for linear synchronous motors employing halbach arrays". United States. https://www.osti.gov/servlets/purl/1166012.
@article{osti_1166012,
title = {Position sensor for linear synchronous motors employing halbach arrays},
author = {Post, Richard Freeman},
abstractNote = {A position sensor suitable for use in linear synchronous motor (LSM) drive systems employing Halbach arrays to create their magnetic fields is described. The system has several advantages over previously employed ones, especially in its simplicity and its freedom from being affected by weather conditions, accumulated dirt, or electrical interference from the LSM system itself.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {12}
}

Works referenced in this record:

Non-oriented direct coupled gear tooth sensor using a Hall cell
patent, May 1988


Inductrack magnet configuration
patent, October 2003


Position indicating system
patent, February 2004


Transport system powered by short block linear synchronous motors
patent, December 2013


Sensing apparatus having a cut-plane sensor and signal conditioner formed in a seamless monolithic substrate
patent-application, December 2002


Magnetic displacement measurement device
patent-application, May 2006


Magnetic sensor for determining the location of controlled magnetic leakages
patent-application,  


Device to correct interference errors between magnetic sensors for measuring the position of mobile elements
patent-application, June 2007


Magnetic Field Sensor, Sensor Comprising Same and Method for Manufacturing Same
patent-application, August 2007


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