Flight control system employing complementary filter

Details Flight control system employing complementary filter Flight control system employing complementary filter

1985-11-12

1987-10-06

Barefoot, Galen

Aeronautics and astronautics

Aircraft control

Automatic

364434, 318584, B64C 1316

Patent

active

046977686

ABSTRACT:
Strake, flap and canard control surfaces of an aircraft are driven by an error signal which is comprised of a pilot stick command signal and feedback components including measured vertical acceleration and pitch rate of the aircraft and a third feedback component derived from a complementary filter. The filter has a high-pass filter section which operates upon canard position data and a low-pass filter section which operates upon pitch rate. A summation of the signals passing both filtering sections is summed with the vertical acceleration and pitch rate feedback signals to form a combined feedback signal.

REFERENCES:
patent: 3077557 (1963-02-01), Joline et al.
patent: 3137459 (1964-06-01), Smith et al.
patent: 3241077 (1966-03-01), Smyth et al.
patent: 4161300 (1979-07-01), Schwaerzler

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