Phase-sensitive LVDT transducer testing system
A system has been developed to measure mechanical and electrical parameters of ultralinear STA0.05% (full scale) nonlinearity! displacement transducers of the linear variable differential transformer (LVDT) type. From these measurements, transducer pretravel, over travel, maximum percent nonlinearity, null voltage, and half-range output voltage can be determined. The system measures transducer stylus position with a precision digital micrometer. Corresponding output/input voltage ratio (transfer ratio) data are measured using a phase-sensitive, AC bridge circuit. From these measuremerts the maximum percent nonlinearity of an LVDT transducer is determined with an accuracy of plus or minus 0.024% (full scale) for a 0.200-inch (5.08-mm) transducer. (auth)
- Research Organization:
- Oak Ridge Y-12 Plant, Tenn. (USA)
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-29-028959
- OSTI ID:
- 4301866
- Report Number(s):
- Y--1936
- Country of Publication:
- United States
- Language:
- English
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