Three-dimensional closed-loop feedback control method for automatic rocket inertia unit target prism collimation

Abstract

The invention provides a three-dimensional closed-loop feedback control method for automatic rocket inertia unit target prism collimation. The method comprises the following steps: an electric collimator uses a CCD camera to capture a target prism, and an aiming controller identifies a target through an image acquisition card, and controls the electric collimator and an electric guide rail to implement whole-process scanning; the electric collimator acquires offset and azimuth rotation signals of the target prism in the horizontal and pitching directions; the aiming controller performs closed-loop feedback control on the target prism; and the aiming controller controls the motion of the electric guide rail and the electric collimator to track the three-dimensional attitude change of the target prism and implement automatic target prism collimation. The three-dimensional closed-loop feedback control method has the advantage that as a photoelectric sensor and the CCD camera are arranged and the double closed-loop control scheme is adopted, the motion state of a carrier rocket can be detected and monitored in real time, the state of automatic collimation is maintained, and collimation with a rocket inertia unit target prism can be automatically completed in 10 minutes under the condition of rocket target loss.

Description

technical field [0001] The invention relates to a control method, in particular to a three-dimensional closed-loop feedback control method for automatic alignment of a rocket inertial group target prism. Background technique [0002] Compared with the traditional launch vehicle, the new generation launch vehicle adopts the guidance scheme of strapdown inertial group + arrow-borne computer, and the rocket launch pad has no rotation function, so the requirements for the ground aiming system have changed: since the ground aiming system needs to be a strapdown The inertial set provides a north reference, so it needs to be aligned with the target prism on the strapdown inertial set. However, the launch vehicle needs to be erected for a long time before launch. At this time, due to the influence of wind swing, filling, etc., the launch vehicle will be displaced in both horizontal and pitch directions. Since the ground aiming system is far away from the strapdown inertial group (2...

AI Technical Summary

Problems solved by technology

However, the launch vehicle needs to be erected for a long time before launch. At this time, due to the impact of wind swing, filling, etc., the launch vehicle will be displaced in both horizontal and pitch directions.

Since the ground aiming system is far away from the strapdown inertial group (25m), the displacement of the launch vehicle will lead to a decrease in aiming accuracy, or even aiming failure

[0003] Therefore, the ground aiming system needs to monitor in real time, automatically track the movement of the launch vehicle, and automatically maintain the collimation state, which puts forward higher requirements for the electronically controlled aiming device, and the traditional technology can no longer meet the needs

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