Temperature compensating circuit for LVDT and control system
US5087866A · kind A · utility
14Cited by
11References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1991 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | May 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2291
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A linear variable displacement transducer (LVDT) has a core connected to an actuator such as a torque motor. The outputs of the LVDT are demodulated and subtracted to provide a displacement signal which is compared with a desired displacement to provide closed loop control of the torque motor. The desired displacement is formed by multiplying a demand signal by the sum of the demodulated LVDT outputs so as to provide temperature compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.