Method of estimating load inertia for a motor
US7289915B2 · kind B2 · utility
7Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M1/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of estimating load inertia for a motor is provided that can estimate the load inertia even when a cogging torque of the motor is large or resonance occurs in the mechanical system of the load. Vibration is detected in an acceleration feedback signal. An estimated inertia gain Kn is multiplied by a coefficient α of zero (0) or more but less than one (1) when the detected vibration is equal to or more than a predetermined level, or the estimated inertia gain Kn is multiplied by a coefficient α of one (1) when the detected vibration is less than the predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.