Multiaxis hardover protection apparatus for automatic flight con

Details Multiaxis hardover protection apparatus for automatic flight con Multiaxis hardover protection apparatus for automatic flight con

1981-08-31

1984-07-17

Chin, Gary

Boots, shoes, and leggings

244 1713, 244177, G06F 1550, G06G 778

Patent

active

044609647

ABSTRACT:
A hybrid analog/digital autopilot utilizing analog inner loops in each control axis of the aircraft and a digital processor for providing outer loop commands and inner loop gain augmentation commands to the inner loops. The command from the processor to each inner loop is buffered by an adaptive rate limit circuit that initially transmits high frequency commands and over a predetermined time interval limits the command rate to a safe low value. Alternatively, the adaptive rate limit buffer transmits the high frequency command up to a predetermined attitude limit and thereafter transmits a command limited to a low safe rate.

REFERENCES:
patent: 3848833 (1974-11-01), Rauschelbach
patent: 3887921 (1975-06-01), Spratt et al.
patent: 3981442 (1976-09-01), Smith
patent: 4129275 (1978-12-01), Gerstine et al.
patent: 4382283 (1983-05-01), Cleford et al.
patent: 4385355 (1983-05-01), Verzella et al.
patent: 4385356 (1983-05-01), Verzella et al.

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