Deflection-error-reduced position control apparatus for ball screw drive system
US6184644A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | May 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49195
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In an apparatus for controlling the position of an object driven by a servomotor via a ball screw drive system, parameters of the ball screw drive system are determined from a position command value, an acceleration command value, a torque command value and a motor speed, based on which a dynamic deflection extent while the object is driven at an adjustable speed is calculated. To compensate for this dynamic deflection extent, a deflection compensation command section calculates a deflection compensation value, a deflection speed compensation value, and a deflection torque compensation value. These compensation values are added to their related sections in the position control apparatus individually and collectively compensate for the dynamic deflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.