Compensated field current control for a separately excited DC motor
US6021251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In accordance with one embodiment of the present invention, a motor control system is provided comprising an electrical motor, a motor speed sensor, a speed command generator, an armature voltage sensor, and a microprocessor. The electrical motor includes an armature assembly and a field assembly. The armature assembly is responsive to an armature current, the magnitude of which is a function of a predetermined armature current setpoint. The field assembly is responsive to a field current, the magnitude of which is a function of a predetermined field current setpoint and a field current correction signal. The motor speed sensor is arranged to generate an actual motor speed signal representative of an actual speed of the electrical motor. The speed command generator is arranged to generate a speed command signal indicative of a desired speed of the electrical motor. The armature voltage sensor is arranged to generate a measured armature voltage signal from an electrical potential of the armature assembly. The microprocessor is programmed to: (i) generate an armature voltage reference signal, the field current setpoint, and the armature current setpoint, wherein the armature voltage …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.