Velocity compensation for limited displacement motors
US4353017A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1976 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Dec 1, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/902
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A velocity-compensation circuit for a limited-displacement motor comprises a bridge circuit incorporating the control winding of the motor in a first arm. An adjacent bridge arm includes both an inductance and a resistance whose ratio is the same as that of the first bridge arm. The bridge is balanced to eliminate from its output the effect of current through the control winding. The bridge output in normal operation is therefore solely a function of motor velocity and this signal is fed back to provide velocity compensation for the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.