GB951785A - A control system comprising a digital course channel and an analogue fine channel - Google Patents

A control system comprising a digital course channel and an analogue fine channel

Info

Publication number
GB951785A
GB951785A GB26127/60A GB2612760A GB951785A GB 951785 A GB951785 A GB 951785A GB 26127/60 A GB26127/60 A GB 26127/60A GB 2612760 A GB2612760 A GB 2612760A GB 951785 A GB951785 A GB 951785A
Authority
GB
United Kingdom
Prior art keywords
tracks
track
units
motor
division
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
GB26127/60A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Priority claimed from DEL33840A external-priority patent/DE1087676B/en
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB951785A publication Critical patent/GB951785A/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
    • G05B19/39—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 a combination of the means covered by at least two of the preceding sub-groups G05B19/21, G05B19/27, and G05B19/33
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device

Abstract

951,785. Selective signalling systems. LICENTIA PATENT VERWALTUNGS G.m.b.H. July 27, 1960 [July 29, 1959], No. 26127/60. Heading G4H. In a machine-tool control system, coarse control of motor 3, Fig. 1, is effected by a digital servo system including a comparator 8, and fine control of motor 3 is effected by an analogue servo system. Motor 3 drives a coded disc 2 and also a device 1 which produces an analogue voltage representing the shaft position within the range covered by one division on the least significant track of disc 2. Disc 2 besides carrying binary coded tracks 1-3, Fig. 4, also has two control tracks A, B, the divisions of which are equal to one half the divisions of track 1 and are displaced from each other by one quarter of a division, this corresponding to 25 units in the example shown where each division of track 1 corresponds to 100 units. Tracks 1-3 are sensed by lead and lag devices 21a, 21b-23a, 23b and tracks A, B are sensed by devices 19, 20 which are displaced from the centre line 18, preferably by 12. 5 units. Disc 2, Fig. 1, supplies comparator 8 with signals from tracks A, B as well as the binary-coded tracks, and a logic circuit 10 supplied with the two least significant decimal digits of the desired position determines which of tracks A and B is to be effective, track A being selected for the first and third quarters of a division of track 1 i.e. 0-24 and 50-74 units, and track B being selected for the second and fourth quarters, i.e. 25-49 and 75-99 units. The two least significant decimal digits are further supplied to an analogue to digital converter 7, and the sum of the voltages from converter 7 and device 1 is supplied to contact 6b of switch 6. Circuit 10 ensures that the zero output from comparator 8 occurs when the motor shaft is about 25 units from the desired position, switch 6 then operating to select contact 6b for control of motor 3 and reducing the motor speed to avoid overrunning.
GB26127/60A 1959-07-29 1960-07-27 A control system comprising a digital course channel and an analogue fine channel Expired GB951785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL33840A DE1087676B (en) 1959-07-29 1959-07-29 Method for switching from digital coarse channels to analog fine channels in control arrangements
FR834231A FR1270729A (en) 1959-07-29 1960-07-28 Method for changing, in regulating devices, from an approximate digital regulating channel to a precision analog regulating channel

Publications (1)

Publication Number Publication Date
GB951785A true GB951785A (en) 1964-03-11

Family

ID=25985238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26127/60A Expired GB951785A (en) 1959-07-29 1960-07-27 A control system comprising a digital course channel and an analogue fine channel

Country Status (2)

Country Link
FR (1) FR1270729A (en)
GB (1) GB951785A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672639A1 (en) * 1991-02-12 1992-08-14 Siemens Automotive Sa METHOD AND DEVICE FOR CONTROLLING THE POSITION OF A BUTTERFLY ADJUSTING THE QUANTITY OF AIR INTAKE IN AN INTERNAL COMBUSTION ENGINE.
WO2002025640A2 (en) 2000-09-21 2002-03-28 Gsi Lumonics Corporation Digital control servo system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672639A1 (en) * 1991-02-12 1992-08-14 Siemens Automotive Sa METHOD AND DEVICE FOR CONTROLLING THE POSITION OF A BUTTERFLY ADJUSTING THE QUANTITY OF AIR INTAKE IN AN INTERNAL COMBUSTION ENGINE.
WO1992014045A1 (en) * 1991-02-12 1992-08-20 Siemens Automotive S.A. Method and device for controlling the position of a throttle for regulating the quantity of air admitted into an internal combustion engine
WO2002025640A2 (en) 2000-09-21 2002-03-28 Gsi Lumonics Corporation Digital control servo system
EP1332494A2 (en) * 2000-09-21 2003-08-06 GSI Lumonics Corporation Digital control servo system
EP1332494A4 (en) * 2000-09-21 2005-04-20 Gsi Lumonics Corp Digital control servo system

Also Published As

Publication number Publication date
FR1270729A (en) 1961-09-01

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