GUIDED MISSILE SELF-SUSTAINED AUTOPILOT Russian patent published in 1998 - IPC

FIELD: defence equipment, in particular, guided missiles. SUBSTANCE: guided missile self-sustained autopilot uses series-connected subtraction unit, whose first input serves as the autopilot mission input, integro- differentiation-type compensating filter with predominance of integration at free-running frequencies built around an operational amplifier, as well as a limiting element made in the form of two opposite-connected stabilizer diodes in the operational amplifier feedback circuit, nonlinear element, power amplifier and an actuator with a control magnet, whose output serves as the autopilot output is connected to the second input of the subtraction unit via feedback transmitter; the level of limitation is connected with spacing of the filter integrating and differentiating time constants by relation: U_lim= L(ω_s.z)•Umaxl

,, where: L(ω_s.z) - filter attenuation at self-running frequency; Umaxl - linear zone of operational amplifier less limiting element equal to summary value of maximum probable amplitude of self-sustained oscillations and maximum speed error of autopilot loop. EFFECT: enhanced quality of transient process due to reduced transient time. 5 dwg