GB1403479A - Position control apparatus - Google Patents
Position control apparatusInfo
- Publication number
- GB1403479A GB1403479A GB5879573A GB5879573A GB1403479A GB 1403479 A GB1403479 A GB 1403479A GB 5879573 A GB5879573 A GB 5879573A GB 5879573 A GB5879573 A GB 5879573A GB 1403479 A GB1403479 A GB 1403479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- desired position
- rotor
- driving means
- pulses
- counter
- 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
- 230000000977 initiatory effect Effects 0.000 abstract 4
- 230000001419 dependent effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
- H02P8/32—Reducing overshoot or oscillation, e.g. damping
-
- 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 groups G05B19/21, G05B19/27 and G05B19/33
-
- 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
- G05B2219/42—Servomotor, servo controller kind till VSS
- G05B2219/42212—Rotation over, selection of smallest, shortest angle, distance
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Control Of Stepping Motors (AREA)
- Control Of Position Or Direction (AREA)
Abstract
1403479 Automatic Control of Position INTERNATIONAL BUSINESS MACHINES CORP 19 Dec 1973 [27 Dec 1972 (2)] 58795/73 Heading G3N [Also in Division H2 ] Apparatus for controlling the position of a body, preferably the rotor of a stepping motor, moving into a desired position comprise, first and second driving means for supplying driving energy to the body in first and opposite directions respectively, means for initiating operation of the second driving means when the body has moved through the desired position in the first direction, means for subsequently initiating operation of the first driving means when the body is returning towards the desired position in the opposite direction, and means, for subsequently interrupting the operation of the second driving means before the body reaches the desired position. The control is generally digital and the desired position is loaded into a register for comparison with the count stored in a counter fed with pulses produced by a device indicative of rotation of the rotor. These pulses together with a pulse emitted when desired and actual positions coincide control operation of the apparatus. An overshot counter is enabled for the the rotor has passed the desired position for the first time and counts the emitted pulses with regard to the direction of movement of the rotor. A divide-by-two counter also counts the same input pulses as the overshoot counter and the two counts are compared, switch pulses being produced when equality is achieved. The switch pulse causes initiation of the first driving means and by this arrangement this initiation takes place when the rotor is approximately half-way between the desired position and its furthest from the desired position. Furthermore, the second driving means is not interrupted until the rotor has moved one movement further back towards the desired position. A fine positioning system is activated when the rotor moves through the desired position for the second time whereby an analog controller supplies the driving means with voltage dependent upon the distance from the desired position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00319088A US3845378A (en) | 1972-12-27 | 1972-12-27 | Analog stepping motor control system |
| US00319065A US3842331A (en) | 1972-12-27 | 1972-12-27 | Digital stepping motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1403479A true GB1403479A (en) | 1975-08-28 |
Family
ID=26981819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5879573A Expired GB1403479A (en) | 1972-12-27 | 1973-12-19 | Position control apparatus |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2364762A1 (en) |
| FR (1) | FR2212681B1 (en) |
| GB (1) | GB1403479A (en) |
-
1973
- 1973-11-14 FR FR7341693A patent/FR2212681B1/fr not_active Expired
- 1973-12-19 GB GB5879573A patent/GB1403479A/en not_active Expired
- 1973-12-27 DE DE19732364762 patent/DE2364762A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2212681A1 (en) | 1974-07-26 |
| DE2364762A1 (en) | 1974-07-04 |
| FR2212681B1 (en) | 1978-11-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |