Method and apparatus for signal tracking using feedback control

Details Method and apparatus for signal tracking using feedback control Method and apparatus for signal tracking using feedback control

1994-11-09

1996-02-27

Envall, Jr., Roy N.

Boots, shoes, and leggings

364149, 364157, G05B 1304

Patent

active

054954088

ABSTRACT:
A feedback control loop having a variable attenuator controlled by oscillation detector means and overshoot detector means to better track the input signal. The oscillation detector means utilizes an estimated signal value compared to a subsequent measured value with the absolute difference of the two compared to predetermined threshold values. Should the calculated difference exceed predetermined threshold values, the variable attenuator value is adjusted and the process repeated after a brief disabling period to allow settling.
In addition to the oscillation detector, an overshoot detector means may also be used alone or in combination with oscillator detector means to control the variable attenuator setting.

REFERENCES:
patent: 3651428 (1972-03-01), Brander
patent: 4313209 (1982-06-01), Drucker
patent: 4386236 (1983-05-01), Ferrieu et al.
patent: 4546426 (1985-10-01), Hafner et al.
patent: 4817160 (1989-03-01), DeKoning et al.
patent: 5014309 (1991-05-01), West, Jr.

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