Position control apparatus
US4795955A · kind A · utility
7Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1986 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Oct 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/39
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a position control apparatus for a table of a machine tool, for example, wherein the position of the table is detected by a position detector and a difference between a detected position and an instructed position is used to control the speed of a driving motor of the table, the position detector is constructed as an absolute type. Further, there is provided an error correcting device producing a correction value corresponding to an instructed position or a detected position. During starting, the correction value is added to the absolute value and the sum is used to update an instructed position register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.