AUTOCOLLIMATION METHOD OF CONTROLLING STABILIZATION ERROR OF OPTICAL STABILISERS Russian patent published in 2017 - IPC G01H9/00 

FIELD: physics.

SUBSTANCE: autocollimation method of controlling the stabilization error of the optical stabilisers refers to the area of controlling the parameters of stabilization and vibration and can be used to check the stabilization and vibration error of the optical system stabilisers aiming and navigating complexes of aircrafts. Autocollimation method of controlling the stabilization error of the optical stabilisers is that a controlled product and technological mirror are installed on the stand, a digital laser speed autocollimator is separately installed. Moreover, the controlled product is mounted with the ability to rotate relative to the stand, and the technological mirror is rigidly fixed on the stand, while providing optical communication of the digital laser speed autocollimator, the controlled product and the technological mirror, adjusting the system, the stand moving is performed according to the specified program, while the stand oscillates, while the stand performs oscillatory movements in, at least, one plane. In addition, the stabiliser compensates for the stand movement, the utocollimation mark image displacement of the digital laser high-speed autocollimator is observed on the observation device, the displacement coordinates are recorded in the angular measure, the stand performs complex oscillatory motions in two mutually perpendicular planes. Then, at the specified equal intervals, the coordinates of the autocollimation mark displacement are taken from one of the perpendicular components of the observing device crosshair, according to the obtained data, the time characteristic of the stabiliser oscillations is plotted, the oscillation frequency for each displacement point of the autocollimation mark is calculated, the amplitude values of the amplitude-frequency characteristic for each frequency value in the frequency-time spectrum are measured, the amplitude-frequency response is plotted, data extraction, plotting the graphs and the frequency response for the other perpendicular component of the observing device crosshair are performed similarly.

EFFECT: increasing the accuracy, objectivity and reliability of monitoring the parameters of stabilization and vibration of the system.

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