Digital angle conversion method

Details Digital angle conversion method Digital angle conversion method

1997-12-10

1998-09-29

Mai, Tan V.

Boots, shoes, and leggings

G06G 722

Patent

active

058154248

ABSTRACT:
In a conventional digital angle conversion method, constituent parts partially have an analog arrangement, the entire arrangement is not easily made as a monolithic semiconductor, and a low price, a light weight, and high reliability cannot be easily obtained. In addition, high-speed tracking is limited. A digital angle conversion method according to the present invention is a method in which a rotating signal is introduced into a sin.multidot.cos multiplier (2) to obtain a first output signal sin(.theta.-.phi.).multidot.f(t), the first output signal sin(.theta.-.phi.).multidot.f(t) is synchronously rectified to remove an exciting component f(t) so as to obtain a second output signal sin(.theta.-.phi.), a digital angle output (.phi.) is obtained by a voltage control oscillator (5) and a one-turn counter (6), and the arrangement of respective sections can be made as a monolithic semiconductor.

REFERENCES:
patent: 4149260 (1979-04-01), Loper, Jr.
patent: 4335443 (1982-06-01), Dickey

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