JPS5764804A - Digital servo system - Google Patents

Digital servo system

Info

Publication number
JPS5764804A
JPS5764804A JP13826280A JP13826280A JPS5764804A JP S5764804 A JPS5764804 A JP S5764804A JP 13826280 A JP13826280 A JP 13826280A JP 13826280 A JP13826280 A JP 13826280A JP S5764804 A JPS5764804 A JP S5764804A
Authority
JP
Japan
Prior art keywords
counter
pulse
stability
output
digital filter
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
JP13826280A
Other languages
Japanese (ja)
Inventor
Iwao Okita
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP13826280A priority Critical patent/JPS5764804A/en
Publication of JPS5764804A publication Critical patent/JPS5764804A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/23—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
    • G05B19/231—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41021—Variable gain
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41202—Structure, compensation circuit after comparator in loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To increase not only the stability but the linearity and the responsiveness for a digital servo system, by inserting a phase compensating digital filter into a servo loop. CONSTITUTION:When a shift command pulse is supplied to a position counter 1, the output of the counter 1 is compared with the output of a speed counter 8 through an error arithmetic device 2. With this difference of outputs, a pulse duration modulating circuit 3 works. Thus the difference of outputs is converted into the current by a power amplifier 4. Then a servomotor 5 turns, and the output of a pulse encoder 6 is converted into the positive and negative shift pulses by a pulse decoder 7. The counter 1 performs a count-up or count-down action according to the positive or negative state of the shift command pulse. The gain of a comparatively high frequency region that affects the stability of system is suppressed; while the gain of a comparatively low frequency region that has no contribution to the stability is increased. Then a speed loop phase compensating digital filter 9 is connected with a current loop phase compensating digital filter 10. Thus both the linearity and the responsiveness are improved.
JP13826280A 1980-10-04 1980-10-04 Digital servo system Pending JPS5764804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13826280A JPS5764804A (en) 1980-10-04 1980-10-04 Digital servo system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13826280A JPS5764804A (en) 1980-10-04 1980-10-04 Digital servo system

Publications (1)

Publication Number Publication Date
JPS5764804A true JPS5764804A (en) 1982-04-20

Family

ID=15217817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13826280A Pending JPS5764804A (en) 1980-10-04 1980-10-04 Digital servo system

Country Status (1)

Country Link
JP (1) JPS5764804A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062892A (en) * 1983-09-13 1985-04-11 Mitsubishi Electric Corp Control system of ac motor
CN102033515A (en) * 2009-09-28 2011-04-27 三菱电机株式会社 Processing-control device and laser processing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507983A (en) * 1973-05-30 1975-01-27
JPS5582307A (en) * 1978-12-15 1980-06-21 Fanuc Ltd Position control system of numeric control machine tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507983A (en) * 1973-05-30 1975-01-27
JPS5582307A (en) * 1978-12-15 1980-06-21 Fanuc Ltd Position control system of numeric control machine tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062892A (en) * 1983-09-13 1985-04-11 Mitsubishi Electric Corp Control system of ac motor
CN102033515A (en) * 2009-09-28 2011-04-27 三菱电机株式会社 Processing-control device and laser processing device

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