Measurement method by numerical control device
US4549271A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1983 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | Jan 27, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/42118
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Disclosed is a measurement method performed by a numerical control device measurement apparatus having a device for computing and storing the difference between a number of feedback pulses, each of which is generated whenever a movable element moves by a predetermined amount, and a number of command pulses (P.sub.s) generated by a pulse distributor, a motor being controlled in such a manner that said difference approaches zero. Specifically, the measurement method includes counting, by the storage and computing means sensor pulses (MP) generated by a sensor, reading the counted value in the storage and computing device and applying the same to the pulse distributor as a command, computing and storing, by the storage and computing device, the difference between the number of sensor pulses (MP) and the number of distributed pulses (P.sub.s) generated by the pulse distributor, reading the content of the storage and computing device each time distributed pulses of a number equivalent to the counted value are generated and applying the read value to the pulse distributor as a command, and measuring the total number of sensor pulses by computing the total sum of the counted values read f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.