Motor control device
US7183738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Apr 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A speed control means 7 for outputting a drive command signal for a motor 1 to make the speed of the motor 1 conform to the speed command signal based on a signal indicating the difference between the speed command signal and the detected speed of the motor; a filter 13 inserted in series with the speed control means 7 in the speed control loop, having a high frequency domain, a low frequency domain, and an intermediate frequency domain between the high frequency domain and the low frequency domain, a gain KL in the low frequency domain being larger than a gain KH in the high frequency domain, and having a phase lag characteristic so that the phase in the intermediate frequency domain is delayed; the speed control means 7 having a proportional controller 9 that multiplies input by a proportional gain KP and outputs the result, and the filter 13 being set so that phase lag occurs between a resonance frequency and an anti-resonance frequency of a mechanical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.