JPS5597189A - Controlling system for variable speed motor - Google Patents

Controlling system for variable speed motor

Info

Publication number
JPS5597189A
JPS5597189A JP433979A JP433979A JPS5597189A JP S5597189 A JPS5597189 A JP S5597189A JP 433979 A JP433979 A JP 433979A JP 433979 A JP433979 A JP 433979A JP S5597189 A JPS5597189 A JP S5597189A
Authority
JP
Japan
Prior art keywords
pulse
brake
pulses
clutch
speed
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
JP433979A
Other languages
Japanese (ja)
Inventor
Katsunori Shigeta
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP433979A priority Critical patent/JPS5597189A/en
Publication of JPS5597189A publication Critical patent/JPS5597189A/en
Pending legal-status Critical Current

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  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To perform a stable control of satisfactory response by performing the control of clutch and brake depending upon the results of the PG pulse in proportion to the output revolution per minute compared with the FG pulse in proportion to the speed command voltage.
CONSTITUTION: The variable speed motor 103 employed in the sewing machine 101, etc. consists of the constant speed motor, the electromagnetic clutch and the brake. The r.p.m. (revolutions per minute) command voltage emitted from the speed setting pedal 104 is changed into the FG pulse, the digital quantity through the V-F converter 201, while the r.p.m. of the motor 103 detected through the detector 106 is changed into the PG pulse through the waveform shaping circuit. The number of FG pulses during the intermediate period between one PG pulse and the next PG pulse is sent out to be counted through the binary counter 204. If the number of the pulse is N1 or less against the specified number N1, N2 (N1<N2), then the pulses are transferred to the brake. If it is between N1 and N2, then, the speed controlling is not performed and if it is N2 or more, the pulses are transferred to the clutch.
COPYRIGHT: (C)1980,JPO&Japio
JP433979A 1979-01-18 1979-01-18 Controlling system for variable speed motor Pending JPS5597189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP433979A JPS5597189A (en) 1979-01-18 1979-01-18 Controlling system for variable speed motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP433979A JPS5597189A (en) 1979-01-18 1979-01-18 Controlling system for variable speed motor

Publications (1)

Publication Number Publication Date
JPS5597189A true JPS5597189A (en) 1980-07-24

Family

ID=11581673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP433979A Pending JPS5597189A (en) 1979-01-18 1979-01-18 Controlling system for variable speed motor

Country Status (1)

Country Link
JP (1) JPS5597189A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106890A (en) * 1982-11-25 1984-06-20 デユルコツプウエルケ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング Controller for controlling rotating speed completely automated for sewing machine and automatic sewing machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185412A (en) * 1975-01-20 1976-07-27 Hitachi Ltd Kaitenkino hensokuseigyohoshiki

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185412A (en) * 1975-01-20 1976-07-27 Hitachi Ltd Kaitenkino hensokuseigyohoshiki

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106890A (en) * 1982-11-25 1984-06-20 デユルコツプウエルケ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング Controller for controlling rotating speed completely automated for sewing machine and automatic sewing machine

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