Design method of single-detection composite shaft control system based on position correction mode
A control system and design method technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve problems affecting system stability, difficult large-scale engineering applications, and difficult decoupling of rough and fine tracking, to achieve The effect of simple design, meeting the bandwidth matching of coarse and fine tracking, and simple structure
Active Publication Date: 2020-07-03
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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[0007] When the TV sampling is low and tracking weak and small targets, the characteristics of fine TV are seriously nonlinear. This method has difficulty in decoupling coarse and fine tracking, which affects system stability. In addition, coarse and fine tracking requires bandwidth matching and complex controller debugging, making it difficult to wide-scale Engineering Applications
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[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0029] like figure 1 As shown, the tracking system consists of a high-resolution small-angle tracking mirror M, a low-resolution large-angle frame G, and a fine detection system, all of which are installed on the same platform. The optical position relationship is described as follows: the target light passes through the optical components such as the primary mirror, secondary mirror, reflector and collimating mirror of the tracking frame G in turn, reaches the tracking mirror M3, and is reflected by the tracking mirror M3 to reach the fine TV detection system. Among them, the fine TV detection system: provides the position of the target in the CCD, and its transfer function characteristics: A; high-resolution small-angle tracking mirror M, its transfer function characteristics: G 2 ; its controller: C 2 ; low-resolution large-angle gantry...
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The invention provides a design method of a single-detection composite shaft control system based on a position correction mode. According to the single-detection composite shaft control system, the simultaneous loop closing of a rack and a tracking mirror is realized by utilizing position information provided by a position detector. In order to avoid the decoupling problem of a single detection system, the adopted mode is as follows: the tracking mirror performs loop closing by utilizing position deviation provided by a fine television, and a loop closing signal of the rack is a deflection angle of the tracking mirror, so that large-angle high-precision tracking can be realized. Aiming at the complex debugging design problem of the single-detection composite shaft system, the invention provides a simple and effective controller design method. The core idea is that the interior of the composite shaft control system is subjected to design constraint, optimal control parameters can be given only by measuring lag information of the detector, and the controller is simple in structure and convenient for practical engineering application.
Description
technical field [0001] The invention relates to the field of beam control, in particular to a design method for a single-detection composite axis control system based on a position correction mode, which can be used in a high-precision photoelectric tracking system. Background technique [0002] In many precision photoelectric tracking fields, both large-angle deflection and high-precision tracking are required. Usually, a composite axis structure is used, that is, the frame adopts a coarse TV closed-loop to achieve a wide range of coarse tracking, and the tracking mirror adopts a precision TV closed-loop to achieve high-precision precision tracking. tracking, which is a dual-detection compound axis control system such as figure 1 shown. Its control block diagram is as follows figure 2 where B is the coarse TV detection characteristic, A is the fine TV detection characteristic, G 1 is the rack object property, C 1 for the rack controller, G 2 For tracking mirror object...
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IPC IPC(8): G02B26/08G05B13/04G01B11/26
CPCG02B26/08G05B13/042G01B11/26
Inventor 李志俊毛耀周翕王继红谭毅
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI