GB876550A - Improvements relating to movement control systems - Google Patents
Improvements relating to movement control systemsInfo
- Publication number
- GB876550A GB876550A GB717758A GB717758A GB876550A GB 876550 A GB876550 A GB 876550A GB 717758 A GB717758 A GB 717758A GB 717758 A GB717758 A GB 717758A GB 876550 A GB876550 A GB 876550A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- pulses
- auxiliary
- signals
- oscillator
- 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
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
- G05B19/408—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 data handling or data format, e.g. reading, buffering or conversion of data
-
- 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
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36366—Data, read in, distribution
-
- 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
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36578—Tracks for x, two for delta x, one for sign, three for y
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
876,550. Electric copying machines. FERRANTI Ltd. May 14, 1959 [March 6, 1958], No. 7177/58. Class 38 (6). In a system in which the movements of a machine tool are controlled by incremental pulses recorded on a magnetic tape, auxiliary control pulse signals are carried at intervals on the same track and a circuit is provided to discriminate between the two types of pulse. It is assumed that the magnetic tape carries four tracks, one each for 3 movement axes and one for monitoring the control tracks. At intervals along the tape are short spaces common to all four tracks, and the presence or absence of an auxiliary signal in each of the four spaces forms a binary coded signal for an unspecified purpose. The main pulses may be negative or positive according to the direction of movement required, and are of necessity widely spaced because of the inertia of the members to be positionally controlled. The auxiliary signals are therefore in the form of closely spaced positive and negative pairs which do not affect the positional control system, and on each track eight of such pairs are used to indicate the presence of an auxiliary signal. Three alternative circuits are disclosed for detecting the presence of the auxiliary pulse pairs. Considering one track, Figs. 1 and 2, auxiliary signals A produce a differentiated output B from a tape reader 12. These signals amplified at 13 are applied in opposite senses to limiting amplifiers 17, 19 which pass only their positive signals, C and D respectively. These pulses trigger oscillators 18, 20 which are also cross-connected to inhibit the other oscillator. Hence oscillator 18 will be triggered by pulses 41 to produce waveform E, and oscillator 20 will be inhibited by pulses 41 and so not respond to pulses 42, but will respond to pulses 43 to produce waveform F. Similarly, oscillator 18 will not respond to pulses 44. Pulse trains E and F are shaped and amplified to G and H at 23, 24 and passed to integrators 25, 26 which each produce an output pulse I, J if at least 5 of the possible 8 auxiliary pulses are received during the time allocated to these signals. Pulse I and J are fed to an AND gate 27 so that if both are present, an overlap pulse K is passed via a delay-line 28 and differentiator 29 to one input of a bi-stable device 30 to trigger it to an ON state. The overlap pulse K is also fed, undelayed, via OR gate 31 and differentiator 32 to the other input of device 30 to ensure that it is in the OFF state before the delayed pulse from 29 arrives. The resetting pulses from all four tracks are fed by the OR gate 31 to the differentiator 32 and thence to all four of the devices 30 so that all are re-set to OFF by whichever track supplies its output first. In a modification, Fig. 3 (not shown), the simultaneous presence of the integrated pulses I and J causes a pulse to be stored by recirculation in a regenerative amplifier until interrupted by a resetting pulse. In a further modification, Fig. 4 (not shown), the two integrators 25, 26 are replaced by a single integrator responsive only to successive pulse pairs of opposite polarity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB717758A GB876550A (en) | 1958-03-06 | 1958-03-06 | Improvements relating to movement control systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB717758A GB876550A (en) | 1958-03-06 | 1958-03-06 | Improvements relating to movement control systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB876550A true GB876550A (en) | 1961-09-06 |
Family
ID=9828080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB717758A Expired GB876550A (en) | 1958-03-06 | 1958-03-06 | Improvements relating to movement control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB876550A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012001372A1 (en) * | 2010-07-01 | 2012-01-05 | Manchester Metropolitan University | Binary half -adder using oscillators |
US9274096B2 (en) | 2014-03-31 | 2016-03-01 | Manchester Metropolitan University | Assay utilising cellular binary half-adder system |
-
1958
- 1958-03-06 GB GB717758A patent/GB876550A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012001372A1 (en) * | 2010-07-01 | 2012-01-05 | Manchester Metropolitan University | Binary half -adder using oscillators |
US20130093458A1 (en) * | 2010-07-01 | 2013-04-18 | Manchester Metropolitan University | Binary half-adder using oscillators |
US8928353B2 (en) * | 2010-07-01 | 2015-01-06 | Manchester Metropolitan University | Binary half-adder using oscillators |
GB2481717B (en) * | 2010-07-01 | 2017-09-13 | Manchester Metropolitan Univ | Binary half-adder and other logic circuits |
US9274096B2 (en) | 2014-03-31 | 2016-03-01 | Manchester Metropolitan University | Assay utilising cellular binary half-adder system |
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