Angular deviation signal generator

Details Angular deviation signal generator Angular deviation signal generator

1975-05-27

1976-10-19

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1302

Patent

active

039874346

ABSTRACT:
Analog signals, +sin .theta.a, -sin.theta.a, +cos.theta.a and -cos.theta.a where .theta. is a measured angle, are composed into a sine and a cosine signal phase shifted by 2.pi.k
where k is one of 0, 1, 2, . . . n as determined by values from the most significant digit to a .pi.
bit digit of a binary command angle lying in one of 2n equal intervals into which a range of 0 to 2.pi. is divided. The phase shifted cosine signal is attenuated as a linear function approximating a tangent of the true value of data expressed by all the remaining digits of the command angle or of its complement as determined by the .pi.
bit digit. The attenuated cosine signal is added to the phase shifted sine signal for the true value of the data and subtracted from the latter for its complement providing an analog deviation between both angles.

REFERENCES:
patent: 3493960 (1970-02-01), Doyle
patent: 3564539 (1969-03-01), Dew
patent: 3618073 (1971-11-01), Domchick et al.
patent: 3668693 (1972-06-01), Eaton et al.
patent: 3675234 (1972-07-01), Metz
patent: 3688303 (1972-08-01), Metz
patent: 3713141 (1973-01-01), Higgins et al.
patent: 3728719 (1973-04-01), Fish

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