Servomotor control method
US5920169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Aug 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41206
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The position of a movable body driven for circular interpolation movement by servomotors is measured directly or indirectly, and the servomotors are controlled in a feedback control mode to drive the movable body for movement according to a position command signal. A torque signal at quadrant change in which the direction of movement of the movable body changes, and a maximum or minimum torque signal at a moment immediately after the reversion of the servomotor are detected, a reference torque for correction is determined on the basis of the difference between the torque signal value at quadrant change and the maximum or minimum torque command value, and the torque signal at quadrant change is corrected with reference to the reference torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.