Motor servo system
US5698960A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1995 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jun 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor servo system includes a microcomputer which obtains FG period data in response to an FG signal outputted from a capstan motor, and calculates rotation unevenness associate data D1 by totalizing (a hundred) absolute values of differences between each of respective FG period data and theoretical values. The microcomputer adjusts a gain of a servo circuit by comparing the rotation unevenness associate data D2 calculated at the last time and the rotation unevenness associate data D1 calculated at this time. That is, if D1>D2, a corrective gain .DELTA.G is inverted and stored into a memory as data D3. A new gain is determined by adding the data D3 and a present gain G.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.