Angle increment optimization method for rolling pendulum seeker tracking loop

Abstract

The invention relates to an angle increment optimization method for a rolling pendulum seeker tracking loop, which comprises the following steps that when an absolute value of a relative motion range of a rolling frame is less than or equal to Pi / 2, calculated angle position instructions of the rolling frame and a pendulum frame are outputted directly; when the absolute value of the relative motion range of the rolling frame is (Pi / 2, 3Pi / 2], the angle position instruction of the pendulum frame is minus; the absolute value of the relative motion range of the rolling frame is controlled to be less than Pi / 2; and when the absolute value of the relative motion range of the rolling frame is (3Pi / 2, 2Pi), a limiting condition of the rolling frame is allowed to optimize an output instruction. According to the angle increment optimization method for the rolling pendulum seeker tracking loop, the provided angle position instruction has a definite, single target directional relation in a tracking range of a seeker; a logical relation is clear; a solution process does not require a large number of matrix operations; hardware is light in burden; and the real-time performance is good.

Description

technical field [0001] The invention belongs to the field of design and application of an optical tracking platform servo control system, and in particular relates to a roll-swing type seeker tracking loop angle increment optimization method suitable for a roll-swing structure imaging seeker. Background technique [0002] At present, the commonly used two-axis imaging seeker stabilization platform mostly adopts pitch-azimuth structure and roll-swing structure. The pitch-azimuth structure seeker usually uses the pitch frame as the inner frame and the azimuth frame as the outer frame. Its advantages are simple and compact, the two channels are independent of each other, less coupling, and the control and tracking algorithms are more mature; the disadvantage is that the spatial structure Due to the constraints of the constraints and the blind area of ​​the large off-axis angle, it is difficult for the off-axis angle of this platform to break through ±60°. The seeker stabilized...

AI Technical Summary

Problems solved by technology

The pitch-azimuth structure seeker usually uses the pitch frame as the inner frame and the azimuth frame as the outer frame. Its advantages are simple and compact, the two channels are independent of each other, less coupling, and the control and tracking algorithms are more mature; the disadvantage is that the spatial structure constraints and the blind zone of large off-axis angles, the off-axis angle of this platform is difficult to break through ±60°

However, the disadvantage of the roll-swing seeker is that there are certain difficulties in extracting and optimizing the control angle position command of the tracking loop

[0004] Among the above three methods, the first two methods require more input information, and there is no numerical multi-solution instruction optimization method for inverse trigonometric functions for specific applications; although the third method proposes instruction optimization criteria, it solves the angle increment process In addition to using the information in the first two methods, the projectile-to-target distance information is also required, which will cause system complexity and cost increase in seeker testing and application

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