Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1996-07-18
1998-09-01
Hofsass, Jeffery
Communications: electrical
Continuously variable indicating
With particular transmitter
34087004, 32420718, G08C 1906
Patent
active
058016457
ABSTRACT:
The apparatus and method of the present invention overcome the difficulties of balancing paired LVDT probes via provision of a quick and inexpensive process that can be implemented in either hardware or software. In particular, a software method is provided for determining a balance correction factor for paired probes in a LVDT gauging system. The balance correction factor is found through a procedure in which an operator moves a part under measurement within a fixture to which the probes are installed. The balance correction factor is then used to mathematically normalize A/D counts from individual paired probe circuits into a single result for each pair.
REFERENCES:
patent: 4904921 (1990-02-01), De Vito et al.
patent: 5087866 (1992-02-01), Smith
Erickson Steven D.
Nelson Cecil
Allen-Bradley Company Inc.
Hill Andrew
Hofsass Jeffery
Horn John J.
Miller John M.
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