GB1425926A - Automatic control systems and methods - Google Patents

Automatic control systems and methods

Info

Publication number
GB1425926A
GB1425926A GB2487472A GB2487472A GB1425926A GB 1425926 A GB1425926 A GB 1425926A GB 2487472 A GB2487472 A GB 2487472A GB 2487472 A GB2487472 A GB 2487472A GB 1425926 A GB1425926 A GB 1425926A
Authority
GB
United Kingdom
Prior art keywords
digital
servo
error
transducer
sign
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.)
Expired
Application number
GB2487472A
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.)
HERBERT Ltd ALFRED
Original Assignee
HERBERT Ltd ALFRED
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 HERBERT Ltd ALFRED filed Critical HERBERT Ltd ALFRED
Priority to GB2487472A priority Critical patent/GB1425926A/en
Priority to AU55982/73A priority patent/AU5598273A/en
Priority to NL7307166A priority patent/NL7307166A/xx
Priority to CH741473A priority patent/CH587518A5/xx
Priority to IT2467573A priority patent/IT990588B/en
Priority to JP5849673A priority patent/JPS4943072A/ja
Priority to BE131556A priority patent/BE800073A/en
Priority to DE19732327010 priority patent/DE2327010A1/en
Priority to FR7319335A priority patent/FR2189787B3/fr
Publication of GB1425926A publication Critical patent/GB1425926A/en
Expired 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
    • G05B19/27—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 absolute digital measuring device
    • 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
    • G05B2219/33—Director till display
    • G05B2219/33268—D-A, A-D

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

1425926 Automatic control ALFRED HERBERT Ltd 1 May 1973 [26 May 1972] 24874/72 Heading G3N A closed-loop control system includes a digital computer for comparing desired and actual values of a tool, and a converting means for providing an analogue error value for the control of a servo-ram positioning the tool. As shown, the actual position of a load 10 is determined by a transducer 12 and an encoder 13 provides a binary-coded position signal on line 30 to a digital computer. The computer compares the actual position with a demand value and the error, in sign and magnitude, is fed through a gate 34 to a buffer store 32. The error value is gated to a digital to analaogue converter 38 providing a signal to load-positioning servo comprising an amplifier 68 controlling a valve 70 of a ram 72. The digital-to-analogue converter 38 comprises an error counter 40 which is counted down by clockpulses through a gate 44 and fed, in dependence on sign, through gates 46, 48 to a bi-stable circuit 50 the output of which is numerated by an integrator 66. The servo is provided with acceleration feedback from a transducer 74 to an input of the amplifier 68.
GB2487472A 1972-05-26 1972-05-26 Automatic control systems and methods Expired GB1425926A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB2487472A GB1425926A (en) 1972-05-26 1972-05-26 Automatic control systems and methods
AU55982/73A AU5598273A (en) 1972-05-26 1973-05-22 Automatic control systems and methods
NL7307166A NL7307166A (en) 1972-05-26 1973-05-22
CH741473A CH587518A5 (en) 1972-05-26 1973-05-24
IT2467573A IT990588B (en) 1972-05-26 1973-05-25 AUTOMATIC CONTROL SYSTEM INCLUDING A DIGITAL COMPUTER
JP5849673A JPS4943072A (en) 1972-05-26 1973-05-25
BE131556A BE800073A (en) 1972-05-26 1973-05-25 AUTOMATIC CONTROL SYSTEMS AND METHODS,
DE19732327010 DE2327010A1 (en) 1972-05-26 1973-05-26 AUTOMATIC CONTROL CIRCUITS AND PROCEDURES
FR7319335A FR2189787B3 (en) 1972-05-26 1973-05-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2487472A GB1425926A (en) 1972-05-26 1972-05-26 Automatic control systems and methods

Publications (1)

Publication Number Publication Date
GB1425926A true GB1425926A (en) 1976-02-25

Family

ID=10218627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2487472A Expired GB1425926A (en) 1972-05-26 1972-05-26 Automatic control systems and methods

Country Status (2)

Country Link
BE (1) BE800073A (en)
GB (1) GB1425926A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935723A1 (en) * 1978-09-06 1980-03-20 Inoue Japax Res SECURITY DEVICE
DK155249B (en) * 1979-02-21 1989-03-13 Necchi Spa ELECTRONIC SEWING MACHINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935723A1 (en) * 1978-09-06 1980-03-20 Inoue Japax Res SECURITY DEVICE
DK155249B (en) * 1979-02-21 1989-03-13 Necchi Spa ELECTRONIC SEWING MACHINE

Also Published As

Publication number Publication date
BE800073A (en) 1973-11-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee