System for controlling rotation of rotating structure
US4295171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1980 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Feb 11, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for controlling the rotation of a rotating structure comprises a detector for detecting the rotation of the rotating structure a circuit for repeatedly forming address signals for every revolution of the rotating structure in response to a detection output from the rotation detector, a memory circuit in which control data responsive to deviations in the rotational peripheral speed of the rotating structure in each revolution thereof have been stored beforehand at addresses corresponding to the address signals, the address signals being supplied to the memory circuit, whereupon the data stored at the corresponding addresses are read out, and a control circuit for obtaining a control signal from the detection output of the rotation detector and the data thus read out from the memory circuit and accordingly controlling the rotation of the rotating structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.