Two-freedom-degree heavy-load tracking stabilized platform system

A technology of stable platform and large load, applied in the direction of navigation through speed/acceleration measurement, control using feedback, etc., can solve the problem of no attitude reference provided by POS, small stability range, inability to work, etc., to achieve large stability range, easy to use Frame control, the effect of wire winding interference reduction

Active Publication Date: 2013-06-12
BEIHANG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, at present, more researches are on the airborne tracking and stabilization platform with small load, less load, and small size. In add

Method used

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  • Two-freedom-degree heavy-load tracking stabilized platform system
  • Two-freedom-degree heavy-load tracking stabilized platform system
  • Two-freedom-degree heavy-load tracking stabilized platform system

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Embodiment Construction

[0024] Such as figure 1 As shown, the present invention includes a structural system, a power system and a control system; the structural system includes four linear vibration dampers 2, a base 1, an azimuth frame 6 and a pitch frame 10; Brush DC torque motor + reduction gear system, including azimuth brushed DC torque motor 4 and azimuth reduction gear 20, used to drive the azimuth frame 6; pitch brushed DC torque motor 15 and pitch reduction gear 16, used to drive the pitch frame 10; The control system includes a measurement component and a control circuit, the measurement component includes a photoelectric imaging device 17, a position and attitude measurement system POS11 measures the attitude information of the pitch frame 10, and the azimuth MEMS gyroscope is sensitive to the rotational angular velocity of the azimuth frame relative to the inertial space along the azimuth axis, and the pitch The MEMS gyroscope is sensitive to the rotational angular velocity of the pitch...

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Abstract

The invention relates to a two-freedom-degree heavy-load tracking stabilized platform system which comprises a base, four line vibration dampers, a position framework, a pitching framework, external loads (a photoelectric imaging device, two micro-electromechanical system (MEMS) accelerometers two MEMS gyroscopes and a position orientation system (POS)), two direct current (DC) torque motors with brushes, two photoelectric coded discs and two framework control circuits. The base is connected with an airplane through line vibration dampers for isolating airplane line vibration. The position framework is supported by the base and carries a pitching frame component to achieve gyration within 0 degree to 360 degrees. The pitching framework is supported by a position frame and carries external loads to achieve gyration within -90 degrees to 0 degree. A control part drives a motor to enable the framework to rotate according to frame angular rate information which is provided by the gyroscopes and attitude information which is provided by the POS or the accelerometers, so that airplane angular motion is compensated and isolated. The two-freedom-degree heavy-load tracking stabilized platform system has the advantages of being high in precision, large in ration between load and self weight, standard in self attitude, and suitable for camera boresight stability in light small air monitoring systems.

Description

technical field [0001] The invention belongs to the technical field of aerial photoelectric imaging, and relates to a two-degree-of-freedom large load tracking and stable platform system, which is suitable for aerial photoelectric imaging systems with helicopters or light and small aircrafts as flight platforms, and can be used for aerial remote sensing, basic surveying and mapping, and military applications. Reconnaissance and other fields. Background technique [0002] Since the stable tracking platform can isolate the carrier (missile, aircraft, tank, ship) disturbance, continuously measure the change of platform attitude and position, accurately maintain the dynamic attitude reference, and realize automatic tracking of maneuvering targets through image detection equipment, so in modern Widely used in weapon systems. For example: in the projectile (arrow) guidance seeker, it is required to follow the main stable target line of sight to isolate the disturbance of the weap...

Claims

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Application Information

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IPC IPC(8): G05D3/12G01C21/18
Inventor 周向阳张宏燕房建成
Owner BEIHANG UNIV
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