SPIN-STABILIZED MISSILE GUIDANCE SYSTEM Russian patent published in 2004 - IPC

FIELD: guidance systems; anti-aircraft and anti-tank guided missile complexes.

SUBSTANCE: proposed system includes formation of missile control signal taking into account compensation of phase lag of actuators depending on present magnitude of frequency period of missile spinning according to preset function of time lag of actuators. Guidance system includes error signal shapers whose outputs are connected respectively with first inputs of first and second modulators, summing amplifier whose first and second inputs are connected respectively with outputs of first and second modulators, actuator whose input is connected with output of summing amplifier and missile roll angle sensor whose first and second output are connected with second inputs of first and second modulators respectively; signals from first and second outputs of roll angle sensor are periodic and are shifted relative to each other at angle of π/2; provision is made for period meter whose input is connected with first output of roll angle sensor, division unit whose dividend input is connected with source of program-time signal (time lag function of actuator). Divisor input of division unit is connected with output of period meter. Inputs of non-linear "cosine" and "sine" function converters are connected with output of division unit. System includes also third and fourth modulators whose first inputs are connected with outputs of error signal shapers and second inputs are connected with output of non-linear :cosine" function converter. System includes fifth and sixth modulators whose first inputs are connected with outputs of error signal shapers and second inputs are connected with output of non-linear "sine" function converter. System is provided with inverting amplifier whose input is connected with output of fifth modulator. Provision is made for second and third summing amplifiers whose first inputs are connected with outputs of third and fourth modulators whose second inputs are connected with outputs of inverting amplifier and sixth modulator and outputs are connected with inputs of first and second modulators.

EFFECT: enhanced accuracy of guidance due to compensation of phase lag of actuator.

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