JPS57208882A - Speed controlling circuit for motor - Google Patents

Speed controlling circuit for motor

Info

Publication number
JPS57208882A
JPS57208882A JP56093927A JP9392781A JPS57208882A JP S57208882 A JPS57208882 A JP S57208882A JP 56093927 A JP56093927 A JP 56093927A JP 9392781 A JP9392781 A JP 9392781A JP S57208882 A JPS57208882 A JP S57208882A
Authority
JP
Japan
Prior art keywords
frequency
circuit
division
division circuit
controlling
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
JP56093927A
Other languages
Japanese (ja)
Inventor
Tadashi Nakagawa
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 Microcomputer System Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Microcomputer Engineering 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, Hitachi Microcomputer Engineering Ltd filed Critical Hitachi Ltd
Priority to JP56093927A priority Critical patent/JPS57208882A/en
Publication of JPS57208882A publication Critical patent/JPS57208882A/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
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover

Abstract

PURPOSE:To simplify a circuit by a method wherein a common frequency-division circuit is provided for two frequency-division circuits shaping speed controlling reference time signals. CONSTITUTION:A signal output by a crystal oscillator circuit 4 is divided in a frequency-division circuit 5 to form a reference frequence pulse fr. The speed- controlling frequency-division circuit consists of a frequency-division circuit 1 receiving the reference frequency pulse fr, and first and second frequency-division circuits 2a and 2b both receiving the output signal from the common frequency-division circuit 1. For example, resetting pulses (a) and (b) representing the behavior of the frequency-division circuits 2a and 2b are inputted to a speed comparator circuit 6 wherein a speed controlling signal FV and a lock detecting signal LD are shaped corresponding to the phase difference between the two resetting pulses (a) and (b). The phase controlling circuit is composed of a frequency-division circuit 3 and a digital phase detecting circuit 7 receiving both the output of the frequency-division circuit 3 and a rotation detecting pulse FGP.
JP56093927A 1981-06-19 1981-06-19 Speed controlling circuit for motor Pending JPS57208882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093927A JPS57208882A (en) 1981-06-19 1981-06-19 Speed controlling circuit for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093927A JPS57208882A (en) 1981-06-19 1981-06-19 Speed controlling circuit for motor

Publications (1)

Publication Number Publication Date
JPS57208882A true JPS57208882A (en) 1982-12-22

Family

ID=14096063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093927A Pending JPS57208882A (en) 1981-06-19 1981-06-19 Speed controlling circuit for motor

Country Status (1)

Country Link
JP (1) JPS57208882A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198467A (en) * 1985-02-28 1986-09-02 Canon Inc Magnetic disc device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198467A (en) * 1985-02-28 1986-09-02 Canon Inc Magnetic disc device

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