Position sensor for linear synchronous motors employing halbach arrays

Post, Richard Freeman

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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:: Post, Richard Freeman

Issue Date:: Tue Dec 23 00:00:00 EST 2014

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

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B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
B60L13/06 - Means to sense or control vehicle position or attitude with respect to railway
B60L2200/26 - Rail vehicles
B60L2220/14 - Synchronous machines

G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G01B7/003 - {for measuring position, not involving coordinate determination

G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
G01D5/145 - {influenced by the relative movement between the Hall device and magnetic fields

H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
H02K11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K41/031 - {of the permanent magnet type}

Show less

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. 
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                    Post, Richard Freeman. Position sensor for linear synchronous motors employing halbach arrays.  United States.

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                    Post, Richard Freeman. Tue .  
        "Position sensor for linear synchronous motors employing halbach arrays".  United States.  https://www.osti.gov/servlets/purl/1166012.

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@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         = {Tue Dec 23 00:00:00 EST 2014},

  month        = {Tue Dec 23 00:00:00 EST 2014}

}

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Frictionally supported gear tooth sensor with self-adjusting air gap
patent, June 1987

Fuzzell, Joe E.
US Patent Document 4,670,715
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Non-oriented direct coupled gear tooth sensor using a Hall cell
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Hall effect contactless position sensor providing a direct proportion between a hall effect voltage and a distance to a magnetic target
patent, May 2000

Guyot, Jean; Frere, Jean-Marie
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System for adjusting a magnetic sensor to detect the presence of ferrous objects
patent, October 2000

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System and method for communication with radio frequency identification tags using tow message DFM protocol
patent, September 2002

Seal, James
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Inductrack magnet configuration
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patent, December 2003

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patent, November 2004

Dimmer, Steven C.
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Electronic non-contacting linear position measuring system
patent, June 2005

Post, Richard F.
US Patent Document 6,906,528
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Transport system powered by short block linear synchronous motors
patent, December 2013

King, Nathanael N.; Perreault, Brian M.; Clark, Tracy M.
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Works referencing / citing this record:

Dynamic linear stator segment control
patent, May 2017

Jetti, Sandhya Rani; O'Neal, George; Bahrami, Nima
US Patent Document 9,641,117
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Transportation system
patent, March 2017

Bambrogan, Brogan; Giegel, Joshua
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Transportation system
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Bambrogan, Brogan; Giegel, Joshua
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Transportation system
patent, December 2016

Bambrogan, Brogan; Giegel, Joshua
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Similar Records

Title: Position sensor for linear synchronous motors employing halbach arrays

Abstract

Citation Formats

Frictionally supported gear tooth sensor with self-adjusting air gap patent, June 1987

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

Vehicle in-lane positional indication/control by phase detection of RF signals induced in completely-passive resonant-loop circuits buried along a road lane patent, January 1998

Hall effect contactless position sensor providing a direct proportion between a hall effect voltage and a distance to a magnetic target patent, May 2000

System for adjusting a magnetic sensor to detect the presence of ferrous objects patent, October 2000

System and method for communication with radio frequency identification tags using tow message DFM protocol patent, September 2002

Inductrack magnet configuration patent, October 2003

System and method for locating radio frequency identification tags patent, December 2003

Position indicating system patent, February 2004

System for excitation of a leadless miniature marker patent, November 2004

Electronic non-contacting linear position measuring system patent, June 2005

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

Three-dimensional information detecting device, three-dimensional information detecting sensor device, and three-dimensional information indicating device patent-application, July 2003

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

Dynamic linear stator segment control patent, May 2017

Transportation system patent, March 2017

Transportation system patent, December 2016

Transportation system patent, December 2016

Frictionally supported gear tooth sensor with self-adjusting air gap
patent, June 1987

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

Vehicle in-lane positional indication/control by phase detection of RF signals induced in completely-passive resonant-loop circuits buried along a road lane
patent, January 1998

Hall effect contactless position sensor providing a direct proportion between a hall effect voltage and a distance to a magnetic target
patent, May 2000

System for adjusting a magnetic sensor to detect the presence of ferrous objects
patent, October 2000

System and method for communication with radio frequency identification tags using tow message DFM protocol
patent, September 2002

Inductrack magnet configuration
patent, October 2003

System and method for locating radio frequency identification tags
patent, December 2003

Position indicating system
patent, February 2004

System for excitation of a leadless miniature marker
patent, November 2004

Electronic non-contacting linear position measuring system
patent, June 2005

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

Three-dimensional information detecting device, three-dimensional information detecting sensor device, and three-dimensional information indicating device
patent-application, July 2003

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

Dynamic linear stator segment control
patent, May 2017

Transportation system
patent, March 2017

Transportation system
patent, December 2016

Transportation system
patent, December 2016