Communications: electrical – Selective – System having rectifier
Patent
1977-06-06
1979-03-13
Blum, Theodore M.
Communications: electrical
Selective
System having rectifier
324, G01S 380
Patent
active
041445198
ABSTRACT:
Apparatus for determining linear or angular measurements or measurements of positions on a planar or curved surface, which apparatus uses at least one delay element, such as a magnetostrictive element, for example, which is capable of supporting an acoustic wave signal. The one or more delay elements may be in the form of bands, rods, wires, planar or spherical structures, and the like, and can be arranged in various embodiments to provide linear or angular position information for single, dual, and multiaxis geometry. They can be used, for example, to provide single or multispeed resolver operation and three-axis attitude read-out. In preferred embodiments the apparatus uses phase measurement techniques so that high accuracy can be achieved.
REFERENCES:
patent: 3116468 (1963-12-01), Perkins
patent: 3121955 (1964-02-01), King
patent: 3176241 (1965-03-01), Hogan et al.
patent: 3597749 (1971-08-01), Uemura et al.
Blum Theodore M.
O'Connell Robert F.
The Charles Stark Draper Laboratory Inc.
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