Aeronautics and astronautics – Missile stabilization or trajectory control – Automatic guidance
Patent
1975-12-24
1977-07-12
Engle, Samuel W.
Aeronautics and astronautics
Missile stabilization or trajectory control
Automatic guidance
244184, F41G 700
Patent
active
040349365
ABSTRACT:
The guidance system for a flying vehicle having at least one guidance channel for converting an error signal to a command signal for a control surface servo of the vehicle includes means for damping oscillations at the natural frequency of the vehicle. A damping means includes a notch filter in the guidance channel which serves to damp oscillations at the notch frequency. The notch frequency is controlled and conformed to the natural frequency of the vehicle, as the natural frequency of the vehicle varies with vehicle speed, by providing the notch filter with a signal related to vehicle speed. The notch filter is arranged to vary the notch frequency in accordance with the signal provided thereto.
REFERENCES:
patent: 2632142 (1953-03-01), Chenery
patent: 3073553 (1963-01-01), Colemann et al.
patent: 3140482 (1964-07-01), Duncan et al.
patent: 3331951 (1967-07-01), Webb
patent: 3773281 (1973-10-01), Doniger et al.
Introduction to Operational Amplifier Theory and Applications, Wait et al. (5/2/75) pp. 282-284, 286.
Guidebook of Electronic Circuits, Markus (1974), p. 264.
Eriksson Sven Willner
Lovung Bengt Gustaf
Salomonsson Hans Manne A.
Sandlin Rolf Hilding
AB Bofors
Cangialosi S. A.
Engle Samuel W.
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