Spindle control system
US5101143A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Sep 24, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/42104
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spindle control system enables a gear change while a spindle is rotating by calculating the position of a motor shaft when gears are reengaged by a target position calculating circuit, and outputting speed commands for the motor shaft by a position control circuit based on the calculation result, and switching by a switching circuit so as to input the speed commands to a speed control circuit. That is, the spindle control system is of the type which controls a spindle in speed and position by a motor via a variable speed gear mechanism, and which includes: a target position calculating circuit for calculating the position of a motor shaft when gears are engaged therewith based on a gear command, the detected position of the spindle and the detected position of a motor shaft; a position control circuit for outputting speed commands for the motor shaft based on the result of the calculation by the target position calculating circuit, and a switch circuit for switching circuits so as to input the speed commands outputted from the position control circuit to a speed control circuit for the motor when gear engagement is to be changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.