Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1976-12-16
1979-01-09
Sloyan, Thomas J.
Communications: electrical
Audible indication
Percussion-type sound producer
318569, 318661, 340198, 340347M, 235 92MP, H03K 1302
Patent
active
041341066
ABSTRACT:
An absolute resolver digitizer for a numerical control system generating a digital number indicative of the absolute angular position of a resolver's rotor within a given revolution is disclosed herein. The resolver digitizer comprises a reference generator generating resolver excitation signals and a digital number indicative of the phase of the generated excitation signals and a resolver follower generating a digital number indicative of the sum of phase of the excitation signal generated by the reference generator and the angular position of the resolver's rotor. Subtraction of the digital number generated by the reference generator from the digital number generated by the resolver follower produces a digital number indicative of the resolver's absolute position within a given revolution. This subtraction may be performed by a separate circuit within the absolute resolver digitizer or may be performed by the computer associated with the numerical control system.
REFERENCES:
patent: 3078400 (1963-02-01), Kilroy et al.
patent: 3634838 (1972-01-01), Grandqvist
patent: 3676650 (1972-07-01), Heneger
patent: 3878535 (1975-04-01), Twiss
patent: 4010463 (1977-03-01), Kay
Ignatowski James R.
Sloyan Thomas J.
The Bendix Corporation
Wells Russel C.
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