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Multi-direction control method for eliminating image rotation in multi-detector fusion scanning imaging system

A technology of scanning imaging and control methods, applied in the direction of using feedback control, etc., can solve problems such as inapplicability, achieve the effects of improving accuracy, improving synchronization accuracy, and reducing the difficulty of mechanical design

Active Publication Date: 2017-02-01
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to solve the situation that the existing two-way control image rotation elimination method is only applicable to one derotation element but not to multiple derotation elements, the present invention provides a multi-directional image rotation elimination method for a multi-detector fusion scanning imaging system. Control Method

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  • Multi-direction control method for eliminating image rotation in multi-detector fusion scanning imaging system
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  • Multi-direction control method for eliminating image rotation in multi-detector fusion scanning imaging system

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specific Embodiment approach

[0018] Specific implementation method: combined Figure 1 to Figure 4 Describe this embodiment, the 45° scanning mirror of the imaging system in the multi-directional control method for eliminating image rotation in the multi-detector fusion scanning imaging system described in this embodiment is driven by a set of motor servo system, called the scanning mirror servo system Motor; each imaging detector is driven by a set of motor servo system, called imaging detector servo motor; there is no mechanical connection between each motor servo system, and it is controlled by a multi-channel multi-directional controller, that is, a multi-directional control The algorithm realizes the cooperative movement of multiple sets of servo systems.

[0019] Specifically include: a single motor command tracking controller, an equivalent torque estimator, and a position controller in a multi-channel multi-directional controller; the single motor command tracking controller of the scanning mirror...

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Abstract

The invention relates to a multidirectional control method for eliminating image rotation in a multi-detector fusion scanning imaging system, and relates to the field of imaging technology. It solves the problem of using a servo motor to drive a 45° scanning mirror and multiple imaging detectors to move cooperatively to eliminate image rotation in a fusion imaging system of multiple detectors with different spectral bands. In the imaging system, after the light passes through the 45° scanning mirror, the beam splitter distributes the beam to each imaging component for imaging. The single-motor command tracking controller receives the scanning mirror rotation command, and controls the rotation of the scanning mirror servo motor and multiple imaging detector servo motors respectively; The effective driving torque is used to provide torque information for the multi-directional controller. The invention achieves the purpose of derotation by controlling the cooperative movement among multiple imaging components through an algorithm without adding additional derotation optical components.

Description

technical field [0001] The invention relates to a motion control method for eliminating image rotation of a multi-detector fusion scanning imaging system, which belongs to the technical field of imaging. Background technique [0002] In an imaging system, the field of view of an optical lens limits the imaging range. The method of horizontal scanning is an effective way to expand the coverage of the imaging system. In order to reduce the moment of inertia of the scanning mechanism, a 45° scanning mirror is usually installed in front of the lens, and the horizontal scanning is realized by controlling the rotation of the scanning mirror. However, the rotation of the scanning mirror will cause the image of the target scene to rotate on the image plane. In order to ensure the image integrity of scanning imaging, a high-precision derotation system must be designed. The patent "a two-way control method for image rotation elimination in scanning imaging system" (application numb...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/20
Inventor 田大鹏王福超
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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