GB906882A - Digital control apparatus - Google Patents
Digital control apparatusInfo
- Publication number
- GB906882A GB906882A GB1304861A GB1304861A GB906882A GB 906882 A GB906882 A GB 906882A GB 1304861 A GB1304861 A GB 1304861A GB 1304861 A GB1304861 A GB 1304861A GB 906882 A GB906882 A GB 906882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- counter
- desired position
- gate
- representing
- supplied
- 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
- G05B19/19—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
- G05B19/21—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 incremental digital measuring device
- G05B19/23—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 incremental digital measuring device for point-to-point control
- G05B19/231—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 incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
- Control Of Position Or Direction (AREA)
Abstract
906,882. Electric selective signalling systems; numerical control systems. WESTINGHOUSE ELECTRIC CORPORATION. April 11, 1961 [May 16, 1960; May 20, 1960] Classes 38 (6) and 40 (1). In a machine-tool control system, a tape reader 22 enters a signal representing a desired position in one co-ordinate into a counter 24; a signal representing the actual position of the controlled machine member stored in counter 44 is entered into error counter 32 which is then supplied with signals representing the desired position and the output of counter 32 representing the difference between the actual and desired positions is used to move the controlled member to the desired position. Similar systems are used for the X and Y co-ordinates. In one embodiment described, counter 24 is a four-stage binary counter, and tape reader 22 enters a first binary coded signal representing the most significant digit of the desired position. Gate 28 is opened and pulses from oscillator 30 are supplied to counter 24 to reduce its count to zero, whereupon gate 28 is closed. The next digit is entered into counter 24, gate 36 opened to reduce the count to zero, and the operation is again repeated for the third digit using gate 38. The three trains of pulses representing the desired position are supplied to the respective stages of counter 32 where they are subtracted from the actual position signal stored therein. The difference output of error counter 32 is converted to analogue form at 54 and applied to the appropriate co-ordinate axis motor 40 which drives the machine element 20 and a pulse generator 42 which supplies pulses representative of the degree, and, if desired, direction of movement, to counters 44 and 32. Gates 48, 50, 52 are closed while the member is being moved, so that although counter 44 follows the change in position of the member, it does not further influence counter 32 until a new positioning operation is to be performed. The pulses from generator 42 supplied direct to counter 32 reduce the error count therein to zero whereupon motor 40 is stopped.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29192A US3183421A (en) | 1960-05-16 | 1960-05-16 | Digital positional servo apparatus |
| US30617A US3189805A (en) | 1960-05-20 | 1960-05-20 | Digital control apparatus having actual-position and error counters for positioning machine members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB906882A true GB906882A (en) | 1962-09-26 |
Family
ID=26704651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1304861A Expired GB906882A (en) | 1960-05-16 | 1961-04-11 | Digital control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB906882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117555292A (en) * | 2024-01-11 | 2024-02-13 | 南京德克威尔自动化有限公司 | Servo drive control method, system, equipment and medium based on cooperative control |
-
1961
- 1961-04-11 GB GB1304861A patent/GB906882A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117555292A (en) * | 2024-01-11 | 2024-02-13 | 南京德克威尔自动化有限公司 | Servo drive control method, system, equipment and medium based on cooperative control |
| CN117555292B (en) * | 2024-01-11 | 2024-04-09 | 南京德克威尔自动化有限公司 | Servo drive control method, system, equipment and medium based on cooperative control |
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