JPS5788802A - Method of preventing reverse running of linear motor - Google Patents

Method of preventing reverse running of linear motor

Info

Publication number
JPS5788802A
JPS5788802A JP55164638A JP16463880A JPS5788802A JP S5788802 A JPS5788802 A JP S5788802A JP 55164638 A JP55164638 A JP 55164638A JP 16463880 A JP16463880 A JP 16463880A JP S5788802 A JPS5788802 A JP S5788802A
Authority
JP
Japan
Prior art keywords
polarity
linear motor
current
vehicle
reverse running
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55164638A
Other languages
Japanese (ja)
Inventor
Shigeki Koike
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55164638A priority Critical patent/JPS5788802A/en
Publication of JPS5788802A publication Critical patent/JPS5788802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
  • Control Of Linear Motors (AREA)

Abstract

PURPOSE: To prevent the reverse running of a linear motor by comparing the polarity of an exciting voltage or current of a propelling coil with that of a position detector.
CONSTITUTION: A speed V is obtained from a position detection signal PDS, and a current pattern ip obtained by multiplying a sinusoidal wave responsive to the speed V by a current i necessary to propel a linear motor to a cycloconverter CC. A polarity discriminator PCH identifies the polarity of the current or voltage supplied to the propelling coil LSM, the polarity of the position detection signal PDS and the specified moving direction of a moving vehicle, and stop the vehicle by applying a gate block to the cycloconverter CC when the moving direction of the vehicle is not the specified direction.
COPYRIGHT: (C)1982,JPO&Japio
JP55164638A 1980-11-25 1980-11-25 Method of preventing reverse running of linear motor Pending JPS5788802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55164638A JPS5788802A (en) 1980-11-25 1980-11-25 Method of preventing reverse running of linear motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55164638A JPS5788802A (en) 1980-11-25 1980-11-25 Method of preventing reverse running of linear motor

Publications (1)

Publication Number Publication Date
JPS5788802A true JPS5788802A (en) 1982-06-02

Family

ID=15796985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55164638A Pending JPS5788802A (en) 1980-11-25 1980-11-25 Method of preventing reverse running of linear motor

Country Status (1)

Country Link
JP (1) JPS5788802A (en)

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