JPS5658791A - Speed controlling device of dc motor - Google Patents

Speed controlling device of dc motor

Info

Publication number
JPS5658791A
JPS5658791A JP13478279A JP13478279A JPS5658791A JP S5658791 A JPS5658791 A JP S5658791A JP 13478279 A JP13478279 A JP 13478279A JP 13478279 A JP13478279 A JP 13478279A JP S5658791 A JPS5658791 A JP S5658791A
Authority
JP
Japan
Prior art keywords
rotation
latch circuit
frequency
pulse
entered
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
JP13478279A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Yoshida
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP13478279A priority Critical patent/JPS5658791A/en
Publication of JPS5658791A publication Critical patent/JPS5658791A/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
    • H02P23/22—Controlling the speed digitally using a reference oscillator, a speed proportional pulse rate feedback and a digital comparator

Abstract

PURPOSE:To eliminate the influence of temperature and the power source voltage fluctuation and to improve the stability of rotation frequency by a method wherein the detection information of frequency proportional to rotation frequency is processed through binary numeral and then, it is converted through a D/A converter. CONSTITUTION:A frequency generator G is connected to the DC motor M and detection signals of the frequency generator G are entered sequentially in one shot circuits O1-O4 to obtain six kinds of rotation pulses Q1-Q4. The rotation pulse Q4 and the reference pulse P1 from the pulse generation circuit POC are entered in the 1st counter C1 and between those phase differences, the 1st clock pulse P2 is counted and the output is held in a latch circuit L1. And further, rotation pulses Q2 and Q3 are entered in the 2nd counter C2 and the 2nd clock pulse P2 is counted between those phase differences and at this time, the initial value of a latch circuit L2 is made to be a value of the latch circuit L1. And the output of the latch circuit L2 is converted through the D/A converter to produce a speed error signal.
JP13478279A 1979-10-18 1979-10-18 Speed controlling device of dc motor Pending JPS5658791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13478279A JPS5658791A (en) 1979-10-18 1979-10-18 Speed controlling device of dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13478279A JPS5658791A (en) 1979-10-18 1979-10-18 Speed controlling device of dc motor

Publications (1)

Publication Number Publication Date
JPS5658791A true JPS5658791A (en) 1981-05-21

Family

ID=15136419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13478279A Pending JPS5658791A (en) 1979-10-18 1979-10-18 Speed controlling device of dc motor

Country Status (1)

Country Link
JP (1) JPS5658791A (en)

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