GB1292030A – Improvements in or relating to a control device and a method of controlling thereby
– Google Patents
GB1292030A – Improvements in or relating to a control device and a method of controlling thereby
– Google Patents
Improvements in or relating to a control device and a method of controlling thereby
Info
Publication number
GB1292030A
GB1292030A
GB6124468A
GB6124468A
GB1292030A
GB 1292030 A
GB1292030 A
GB 1292030A
GB 6124468 A
GB6124468 A
GB 6124468A
GB 6124468 A
GB6124468 A
GB 6124468A
GB 1292030 A
GB1292030 A
GB 1292030A
Authority
GB
United Kingdom
Prior art keywords
pick
ups
tape
amplifier
sensed
Prior art date
1968-12-24
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
GB6124468A
Inventor
John Maximillian Jules Varga
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.)
Carding Specialists Canada Ltd
Original Assignee
Carding Specialists Canada 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.)
1968-12-24
Filing date
1968-12-24
Publication date
1972-10-11
1968-12-24
Application filed by Carding Specialists Canada Ltd
filed
Critical
Carding Specialists Canada Ltd
1968-12-24
Priority to GB6124468A
priority
Critical
patent/GB1292030A/en
1969-12-24
Priority to BE743674D
priority
patent/BE743674A/xx
1969-12-24
Priority to NL6919356A
priority
patent/NL6919356A/xx
1969-12-24
Priority to CH1924869A
priority
patent/CH515551A/en
1969-12-24
Priority to DE19691964894
priority
patent/DE1964894A1/en
1969-12-24
Priority to FR6945033A
priority
patent/FR2027086A1/fr
1972-10-11
Publication of GB1292030A
publication
Critical
patent/GB1292030A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
G05B19/16—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using magnetic record carriers
Abstract
1292030 Programmed control of machines CARDING SPECIALISTS (CANADA) Ltd 22 Dec 1969 [24 Dec 1968] 61244/68 Heading G3N A machine, having a member to be moved in accordance with a predetermined programme, is controlled by information sensed by a pick-up adjacent to a programmed surface which is moved relative to the pick-up, the pick-up being moved in accordance with movement of the movable member, and the pick-up and surface are moved concurrently. As shown, a magnetic tape passes at constant speed from a delivery spool 11 to a take-up spool 12 and bears wavelength modulated waveforms sensed by pick-ups y, y, a reference waveform sensed by a pick-up x, a velocity controlling waveforms sensed by pick-ups w, w and a viscosity related waveform sensed by a pick-up z. The pick-ups y, y are positioned by an hydraulic ram 15 coupled to a movable member of a machine tool, (not shown). The frequencymodulated signals from the pick-ups yy are fed to converters 16 from which are derived D.C. voltages which are compared in a comparator 18 and the error, through a servo-amplifier 19, controls a servovalve 22 determining the supply of fluid to the ram 15 from a pump 23. The signal from the pick-up x is fed to a converter 33 and the resultant D.C. signal fed through an amplifier 33 to a logic circuit box 34. The programme, produced by operating movements of the member coupled to ram 15 or prerecorded, contains breaks in the signal whereby the arm is maintained in step. During play-back a positioning break is sensed by the pick-up x and the logic circuit box opens a switch 30 between a speed control amplifier 31 and an electric motor 29 driving the spool 12. A unique identification of the coincidence between pick-ups yy and x is effected by ratcheting the spool 12 through a clutch 36 and a solenoid 37 and, when the pick-ups yy are moving in the same direction as the tape; actuating a freeze-valve actuator 35 locking servovalve 22. When the heads yy reach the break the logic circuit box 34 causes the tape to re-start. The pair of pick-ups ww detect waveforms on the tape for accelerating or decelerating the device and the signals derived are fed to frequency-voltage converters 39 and the resultant D.C. signals compared in a comparator 40. The resultant signal is amplified in an amplifier 41 and used to control the delivery of the pump 23 and the speed of the motor 29 by control of amplifier 31. A pick-up z is used to compensate for changes in the viscosity of the hydraulic fluid, the detected signal being fed through a converter 42, a comparator 43 to control the pump 23. A reference generator 44 is connected to the comparator 43 and amplifier 31 to keep a reference voltage v kept in step with programmed changes in the general speed of the work-cycle. Two or three dimensional movement is effected by providing two or three different programmed tapes all having fixed and movable heads which are synchronized by positioning breaks. It is stated that an additional pair of tracks can be used to maintain tape speed slightly faster than that of the moving member. In an alternative arrangement for effecting tape synchronization the movable head positions a belt which through selectively operated electromagnetic clutches drives the tape take-up spool. In an alternative embodiment, a separate track is employed for each direction of travel and the output from a pick-up is arranged to operate a change-over valve.
GB6124468A
1968-12-24
1968-12-24
Improvements in or relating to a control device and a method of controlling thereby
Expired
GB1292030A
(en)
Priority Applications (6)
Application Number
Priority Date
Filing Date
Title
GB6124468A
GB1292030A
(en)
1968-12-24
1968-12-24
Improvements in or relating to a control device and a method of controlling thereby
BE743674D
BE743674A
(en)
1968-12-24
1969-12-24
NL6919356A
NL6919356A
(en)
1968-12-24
1969-12-24
CH1924869A
CH515551A
(en)
1968-12-24
1969-12-24
Method and device for controlling a machine
DE19691964894
DE1964894A1
(en)
1968-12-24
1969-12-24
Control unit and method for controlling
FR6945033A
FR2027086A1
(en)
1968-12-24
1969-12-24
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB6124468A
GB1292030A
(en)
1968-12-24
1968-12-24
Improvements in or relating to a control device and a method of controlling thereby
Publications (1)
Publication Number
Publication Date
GB1292030A
true
GB1292030A
(en)
1972-10-11
Family
ID=10486767
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB6124468A
Expired
GB1292030A
(en)
1968-12-24
1968-12-24
Improvements in or relating to a control device and a method of controlling thereby
Country Status (6)
Country
Link
BE
(1)
BE743674A
(en)
CH
(1)
CH515551A
(en)
DE
(1)
DE1964894A1
(en)
FR
(1)
FR2027086A1
(en)
GB
(1)
GB1292030A
(en)
NL
(1)
NL6919356A
(en)
1968
1968-12-24
GB
GB6124468A
patent/GB1292030A/en
not_active
Expired
1969
1969-12-24
CH
CH1924869A
patent/CH515551A/en
not_active
IP Right Cessation
1969-12-24
DE
DE19691964894
patent/DE1964894A1/en
active
Pending
1969-12-24
NL
NL6919356A
patent/NL6919356A/xx
unknown
1969-12-24
FR
FR6945033A
patent/FR2027086A1/fr
not_active
Withdrawn
1969-12-24
BE
BE743674D
patent/BE743674A/xx
unknown
Also Published As
Publication number
Publication date
NL6919356A
(en)
1970-06-26
DE1964894A1
(en)
1970-08-06
CH515551A
(en)
1971-11-15
BE743674A
(en)
1970-05-28
FR2027086A1
(en)
1970-09-25
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Legal Events
Date
Code
Title
Description
1973-02-21
PS
Patent sealed
1976-07-21
PLNP
Patent lapsed through nonpayment of renewal fees
