Motor controller and motor control method
US7733047B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 8, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jul 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller calculates a motor torque command based on motor speed and causes a motor to generate a torque corresponding to the motor torque command, to drive a machine load coupled to the motor. The motor controller includes a speed compensator that makes, when a speed compensation torque is calculated based on the motor speed, frequency characteristics of the speed compensation torque for the motor speed exhibit a low frequency cutoff characteristic so that steady-state gain in frequency response is less than a maximum gain value. A torque adder generates a motor torque command by adding to the existing motor torque command an externally input feedforward torque signal and the speed compensation torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.