JPS529819A - Speed controlling device of dc motors - Google Patents

Speed controlling device of dc motors

Info

Publication number
JPS529819A
JPS529819A JP50085369A JP8536975A JPS529819A JP S529819 A JPS529819 A JP S529819A JP 50085369 A JP50085369 A JP 50085369A JP 8536975 A JP8536975 A JP 8536975A JP S529819 A JPS529819 A JP S529819A
Authority
JP
Japan
Prior art keywords
motors
controlling device
speed controlling
speed
detecting
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
JP50085369A
Other languages
Japanese (ja)
Inventor
Toshiaki Kurosawa
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 JP50085369A priority Critical patent/JPS529819A/en
Publication of JPS529819A publication Critical patent/JPS529819A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Direct Current Motors (AREA)
  • Elevator Control (AREA)

Abstract

PURPOSE: To allow stable speed control by detecting a secondary differential value of a motor speed.
COPYRIGHT: (C)1977,JPO&Japio
JP50085369A 1975-07-14 1975-07-14 Speed controlling device of dc motors Pending JPS529819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50085369A JPS529819A (en) 1975-07-14 1975-07-14 Speed controlling device of dc motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50085369A JPS529819A (en) 1975-07-14 1975-07-14 Speed controlling device of dc motors

Publications (1)

Publication Number Publication Date
JPS529819A true JPS529819A (en) 1977-01-25

Family

ID=13856789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50085369A Pending JPS529819A (en) 1975-07-14 1975-07-14 Speed controlling device of dc motors

Country Status (1)

Country Link
JP (1) JPS529819A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582777A (en) * 1968-07-05 1971-06-01 Physics Int Co Electronic metering system
JPS4842319A (en) * 1971-10-01 1973-06-20
JPS5067921A (en) * 1973-10-22 1975-06-06

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582777A (en) * 1968-07-05 1971-06-01 Physics Int Co Electronic metering system
JPS4842319A (en) * 1971-10-01 1973-06-20
JPS5067921A (en) * 1973-10-22 1975-06-06

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