JPS6426384A - Speed control device of motor - Google Patents

Speed control device of motor

Info

Publication number
JPS6426384A
JPS6426384A JP62181053A JP18105387A JPS6426384A JP S6426384 A JPS6426384 A JP S6426384A JP 62181053 A JP62181053 A JP 62181053A JP 18105387 A JP18105387 A JP 18105387A JP S6426384 A JPS6426384 A JP S6426384A
Authority
JP
Japan
Prior art keywords
speed
value
estimate
motor
speed control
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
JP62181053A
Other languages
Japanese (ja)
Inventor
Masahiko Watanabe
Kenji Kubo
Tsutomu Omae
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 JP62181053A priority Critical patent/JPS6426384A/en
Publication of JPS6426384A publication Critical patent/JPS6426384A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To allow a motor to be controlled stably and precisely, by letting a speed estimate value be a feedback signal when no output of a position detector varies for the time longer than a sampling period. CONSTITUTION:A current command value Ir is calculated using a speed command value Nr and a speed feedback value Nf by a speed control operation 2 of a microcomputer 1. A pulse Ep generated by an encoder 9 is converted into a rotating speed detection value Nd and a rotating position detection value Pd by a positional speed detection circuit 10, a speed detection operation 3 and a position detection operation 5. A speed estimate operation 4 determines a speed estimate value Nd' in accordance with a current command value Ir, a speed detection value Nd and a position detection value Pd. A speed feedback signal Nf is changed over to a speed estimate value Nd' in a low speed when no output pulse of the encoder 9 will come to change in a sampling period of speed control.
JP62181053A 1987-07-22 1987-07-22 Speed control device of motor Pending JPS6426384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62181053A JPS6426384A (en) 1987-07-22 1987-07-22 Speed control device of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62181053A JPS6426384A (en) 1987-07-22 1987-07-22 Speed control device of motor

Publications (1)

Publication Number Publication Date
JPS6426384A true JPS6426384A (en) 1989-01-27

Family

ID=16093952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62181053A Pending JPS6426384A (en) 1987-07-22 1987-07-22 Speed control device of motor

Country Status (1)

Country Link
JP (1) JPS6426384A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066698A (en) * 1990-05-10 1991-11-19 E. I. Du Pont De Nemours And Company Coating composition of an acrylic polymer, a crosslinking agent and a silane oligomer
JP2007018257A (en) * 2005-07-07 2007-01-25 Ricoh Co Ltd DIGITAL SPEED CONTROL DEVICE, DIGITAL MOTOR CONTROL DEVICE, PAPER CONVEYING DEVICE, DIGITAL SPEED CONTROL METHOD, PROGRAM FOR COMPUTER EXECUTING THE METHOD, COMPUTER READABLE RECORDING MEDIUM, AND IMAGE FORMING DEVICE
JP2016127649A (en) * 2014-12-26 2016-07-11 ダイキン工業株式会社 Power converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066698A (en) * 1990-05-10 1991-11-19 E. I. Du Pont De Nemours And Company Coating composition of an acrylic polymer, a crosslinking agent and a silane oligomer
JP2007018257A (en) * 2005-07-07 2007-01-25 Ricoh Co Ltd DIGITAL SPEED CONTROL DEVICE, DIGITAL MOTOR CONTROL DEVICE, PAPER CONVEYING DEVICE, DIGITAL SPEED CONTROL METHOD, PROGRAM FOR COMPUTER EXECUTING THE METHOD, COMPUTER READABLE RECORDING MEDIUM, AND IMAGE FORMING DEVICE
JP2016127649A (en) * 2014-12-26 2016-07-11 ダイキン工業株式会社 Power converter

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