Drive performance measurement
US9634600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2014 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor drive is provided with integrated frequency response analysis tools for generating drive performance metrics that are independent of motion profile and tuning. The metrics are broadly applicable to a wide range of applications, tunings, and load types, and can be used to fairly compare performance across different drives models and assist in drive selection. The frequency analysis tools include a transformation algorithm that reduces or eliminates spectral leakages, a signal generation component that scales the test input signal as a function of frequency avoid saturation based on defined limits of the controlled system, and a phase unwrapping algorithm that correctly unwraps the phase of open-loop and closed-loop response curves. The frequency response analysis tools yield an open-loop response, a closed-loop response, a tracking error response, and a disturbance rejection response, which are used to derive performance metrics for the drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.