JPS6423783A - Rotational frequency controlling circuit for motor - Google Patents

Rotational frequency controlling circuit for motor

Info

Publication number
JPS6423783A
JPS6423783A JP62178242A JP17824287A JPS6423783A JP S6423783 A JPS6423783 A JP S6423783A JP 62178242 A JP62178242 A JP 62178242A JP 17824287 A JP17824287 A JP 17824287A JP S6423783 A JPS6423783 A JP S6423783A
Authority
JP
Japan
Prior art keywords
circuit
desired value
controlled variable
gain
value
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
JP62178242A
Other languages
Japanese (ja)
Inventor
Masaaki Hieda
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP62178242A priority Critical patent/JPS6423783A/en
Publication of JPS6423783A publication Critical patent/JPS6423783A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To enhance the adaptability and stability of a controlling system at the same time, by changing the gain of counter input deviation characteristic according to a difference between a desired value and an actual value. CONSTITUTION:From a comparing circuit 21a, a deviation Y between a desired value Ys and an actual value Y is applied to a motor 3 via an operational amplifier circuit 21b. In the meantime, from a set division circuit 22a, the output of the specified controlled variable Yi of a properly divided difference between the desired value Ys, and a controlled variable initial-value at a control starting time point against the desired value Ys is generated. Then, from a gain setting circuit 22b, the output of a gain Ni/ Y according to a difference between the desired value Ys and the controlled variable Yi is generated. Besides, by a comparing circuit 22c, the actual value Y and the controlled variable Yi are compared with each other, and a selection circuit 22d is turned ON/OFF. Then, from the selection circuit 22d, by the output of the comparing circuit 22c, the gain Ni/ Y is applied to the operational amplifier 21b. As a result, the adaptability and stability of a controlling system can be improved together.
JP62178242A 1987-07-17 1987-07-17 Rotational frequency controlling circuit for motor Pending JPS6423783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62178242A JPS6423783A (en) 1987-07-17 1987-07-17 Rotational frequency controlling circuit for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62178242A JPS6423783A (en) 1987-07-17 1987-07-17 Rotational frequency controlling circuit for motor

Publications (1)

Publication Number Publication Date
JPS6423783A true JPS6423783A (en) 1989-01-26

Family

ID=16045079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62178242A Pending JPS6423783A (en) 1987-07-17 1987-07-17 Rotational frequency controlling circuit for motor

Country Status (1)

Country Link
JP (1) JPS6423783A (en)

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