Inertia and load torque estimating method and apparatus
US7627440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jan 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41381
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for estimating a system inertia and a load torque in a motor controller, the method comprising the steps of providing an acceleration command signal, determining a motor position, using the motor position to generate an acceleration feedback signal, mathematically combining the acceleration feedback signal and a load torque signal to generate a system inertia estimate, mathematically combining the system inertia estimate and the acceleration command signal to generate a motor torque signal, mathematically combining the system inertia estimate and the acceleration feedback signal to generate an inertia torque and mathematically combining the inertia torque and the motor torque signal to generate the load torque estimate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.