Servo control circuit
US4611155A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Dec 7, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/33337
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a servo control circuit for driving a servomotor at a commanded velocity and torque, there are provided a servomotor voltage supply circuit, a servomotor drive current sensing circuit, a servomotor rotation sensor, a single counter for counting rotation sensor pulses, a processor for effecting current loop control based on an applied torque command input, as well as voltage output control of the voltage supply circuit, and a main processor for producing the torque command as an output. A pulse count value during a period T.sub.1 for current loop control is accumulated and the result is utilized by the main processor as position information over for a period T.sub.2. This allows a counter for position information input to be deleted, thereby providing advantages in terms of construction and economy. The invention is applicable to the control of all types of DC and AC servomotors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.