GB1229478A - Creation of Inventions and Patents with Artificial Intelligence

GB1229478A – – Google Patents

Info

Publication number
GB1229478A

GB1229478A

GB1229478DA
GB1229478A
GB 1229478 A
GB1229478 A
GB 1229478A

GB 1229478D A
GB1229478D A
GB 1229478DA
GB 1229478 A
GB1229478 A
GB 1229478A
Authority
GB
United Kingdom
Prior art keywords
motor
values
instantaneous
drive
motors
Prior art date
1968-09-10
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

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.)
1968-09-10
Filing date
1968-09-10
Publication date
1971-04-21

1968-09-10
Application filed
filed
Critical

1971-04-21
Publication of GB1229478A
publication
Critical
patent/GB1229478A/en

Status
Expired
legal-status
Critical
Current

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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

G05B19/31—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 for continuous-path control

G05B19/311—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 for continuous-path control the positional error is used to control continuously the servomotor according to its magnitude

G05B19/313—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 for continuous-path control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only

Abstract

1,229,478. Positioning systems. GERBER SCIENTIFIC INSTRUMENT CO. 10 Sept., 1968, No. 42994/68. Heading G4H. The movement, of, for example, the pen of a two dimensional plotter, is controlled by determining the instantaneous actual position of the pen and comparing it with an instantaneous desired position to generate an error signal used to correct the movement. The plotter may be of the kind having two screw drives (62, 64) at right angles to position the pen head (60) (Fig. 6, not shown). Each drive is driven by a motor M. The plotter is arranged to plot a curve y=f(x); values of x and the function f are supplied by input circuits 41. From the inputs a slope computer 42 derives values for #x and #y representing the instantaneous slope of the curve. These values #x, #y are employed as datum levels for closed loop speed control systems for the motors M which drive tachogenerators T. The instantaneous actual positions x a , Ya of the pen are detected at E and indicated on binary registers 39, 40. The value x a is used to generate a value f(x a ) representing the desired instantaneous value of y and this is compared with y a in a subtractor 52 which generates a position error signal V e used as a datum level for a closed loop speed control for a correcting motor M c . The motions of the y-deflection motor M and the correcting motor M c are added by a mechanical differential gear D coupled to the y-axis drive. The motors M are high speed, high torque type with relatively poor control while motor M c is of low torque type with precise control such as a stepping motor (90) (Fig. 6, not shown). In a modified system (Fig. 6, not shown), in which the plotted curve is a series of straight line elements, the input circuits supply only values xf, y f representing the position of the curve at the end of each element; the value of the function/is computed from these values. The output of the subtractor (52) controls a gate (86) feeding pulses to a stepping motor (90). In another modification (Fig. 8, not shown) a ramp generator is employed to provide smooth stopping and starting of the drive motors M. The correcting motor Mc and differential gear D may be arranged in either one of the drives 35, 36. In a further modification (Fig. 9, not shown) both drives are provided with correcting motors (90, 166) and differentials and the appropriate one is used to correct the drive according to whether the x or y displacement is greater.

GB1229478D
1968-09-10
1968-09-10

Expired

GB1229478A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB4299468

1968-09-10

Publications (1)

Publication Number
Publication Date

GB1229478A
true

GB1229478A
(en)

1971-04-21

Family
ID=10426880
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB1229478D
Expired

GB1229478A
(en)

1968-09-10
1968-09-10

Country Status (1)

Country
Link

GB
(1)

GB1229478A
(en)

1968

1968-09-10
GB
GB1229478D
patent/GB1229478A/en
not_active
Expired

Contact information