JPS57193986A - Speed controller for electric motor - Google Patents

Speed controller for electric motor

Info

Publication number
JPS57193986A
JPS57193986A JP56075722A JP7572281A JPS57193986A JP S57193986 A JPS57193986 A JP S57193986A JP 56075722 A JP56075722 A JP 56075722A JP 7572281 A JP7572281 A JP 7572281A JP S57193986 A JPS57193986 A JP S57193986A
Authority
JP
Japan
Prior art keywords
deviation
value
output
calculator
comparator comp
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
JP56075722A
Other languages
Japanese (ja)
Inventor
Akira Orii
Hachiro Makabe
Kazuji Yamamoto
Muneaki Hagiwara
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.)
Janome Corp
Original Assignee
Janome Sewing Machine Co 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 Janome Sewing Machine Co Ltd filed Critical Janome Sewing Machine Co Ltd
Priority to JP56075722A priority Critical patent/JPS57193986A/en
Priority to DE3219253A priority patent/DE3219253A1/en
Publication of JPS57193986A publication Critical patent/JPS57193986A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/0077—Characterised by the use of a particular software algorithm

Abstract

PURPOSE: To decrease a stationary deviation and improve the transient stability, by a method wherein counted values of an actual speed and a designated speed are compared with each other, the deviation value therebetween is integrated every fixed time, and the integrated value and the deviation value are added to each other, thereby obtaining a control signal.
CONSTITUTION: The rotation speed of a motor M is detected by a detector DR and passed through a rotational period calculator SR to obtain a period Tn, which is ANDed with a reference signal fs to obtain a feedback output Cn, which is fed to a comparator COMP. The comparator COMP makes comparison between the feedback output Cn and a desired value Cs to deliver a deviation signal ΔCn, which is applied to a deviation integrating calculator ID. The output thereof and the deviation signal ΔCn are added to each other in a firing time calculator AT, thereby controlling the motor M through a drive circuit DV. Accordingly, by allowing the stationary deviation as the output value of the comparator COMP to be zero independently of the transfer function value of the circuit, the stationary deviation can be decreased as much as possible and moreover, it is possible to effect a control stable against various disturbances.
COPYRIGHT: (C)1982,JPO&Japio
JP56075722A 1981-05-21 1981-05-21 Speed controller for electric motor Pending JPS57193986A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56075722A JPS57193986A (en) 1981-05-21 1981-05-21 Speed controller for electric motor
DE3219253A DE3219253A1 (en) 1981-05-21 1982-05-21 Speed regulating device for an electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56075722A JPS57193986A (en) 1981-05-21 1981-05-21 Speed controller for electric motor

Publications (1)

Publication Number Publication Date
JPS57193986A true JPS57193986A (en) 1982-11-29

Family

ID=13584436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56075722A Pending JPS57193986A (en) 1981-05-21 1981-05-21 Speed controller for electric motor

Country Status (2)

Country Link
JP (1) JPS57193986A (en)
DE (1) DE3219253A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115576A (en) * 1984-06-29 1986-01-23 Sony Corp Speed servo circuit
JPS61150015A (en) * 1984-12-25 1986-07-08 Fujitsu Ltd Speed control system
JPS6277889A (en) * 1985-09-30 1987-04-10 Toshiba Corp Motor controlling system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821168A (en) * 1985-10-15 1989-04-11 Matsushita Electric Industrial Co., Ltd. Control system with improved robustness to disturbances
US4755729A (en) * 1986-03-11 1988-07-05 Matsushita Electric Industrial Co., Ltd. Method of controlling a control system with improved robustness to disturbances
EP0296699B1 (en) * 1987-04-16 1993-12-01 Matsushita Electric Industrial Co., Ltd. Computer-based control system especially for a motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115576A (en) * 1984-06-29 1986-01-23 Sony Corp Speed servo circuit
JPS61150015A (en) * 1984-12-25 1986-07-08 Fujitsu Ltd Speed control system
JPH0341841B2 (en) * 1984-12-25 1991-06-25
JPS6277889A (en) * 1985-09-30 1987-04-10 Toshiba Corp Motor controlling system

Also Published As

Publication number Publication date
DE3219253A1 (en) 1982-12-09

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