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Light two-freedom-degree camera stabilized platform device

A technology for stabilizing the platform and degrees of freedom, applied in the direction of using feedback control, etc., can solve the problems of low flexibility, long response time of electronically stabilized platform, and it is difficult to eliminate the impact of high-frequency vibration on image quality.

Active Publication Date: 2014-05-14
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the hysteresis of electronic equipment, the response time of these electronic stabilization platforms is long, the adjustment of the steering gear is slow, and it is difficult to eliminate the impact of high-frequency vibration on image quality
Some other mechanically stabilized platforms, due to the simple mechanical structure, are not very flexible, and cannot eliminate the impact caused by low-frequency shaking or body tilt, so it is also difficult to shoot high-quality images, which cannot meet professional needs

Method used

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  • Light two-freedom-degree camera stabilized platform device
  • Light two-freedom-degree camera stabilized platform device
  • Light two-freedom-degree camera stabilized platform device

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Embodiment Construction

[0015] Such as figure 1 As shown, the present invention includes a structural part, a driving part, a measurement acquisition part and a control part; the structural part includes a base frame (4), a rolling frame (1), and a pitching frame (2); the driving part includes two DC servo motors and a motor-driven power amplifier board; the measurement acquisition part includes an electronic level, two grating encoders (5), and a MEMS inertial measurement component device; the control part includes a DSP module and a communication interface module.

[0016] Such as figure 2 As shown, the data collected by the measurement sensor of the present invention is transmitted to the DSP module through the interface circuit of the control module, and the PWM wave generated by the DSP module is input to the motor drive power amplifier board to drive two DC brushless torque motors to rotate, and finally realize a stable platform The rotation of the frame; the data collected by the electronic ...

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Abstract

The invention discloses a light two-freedom-degree camera stabilized platform device. A stabilized platform base frame (4) is connected with an air vehicle, and a transversely-rolling frame (1) and a pitching frame (2) rotate around an X axis and a Y axis respectively; a stabilized platform is corrected by double loops, a speed ring is used as the inner ring, and a position ring is used as the outer ring. Horizontal plane dip angle data collected by an electronic level meter, angle information measured by a grating encoder (5) and angular rate information measured by an MSMS inertia measurement assembly are transmitted to a DSP module through a communication interface circuit, and PWM waveforms are output by a DSP and converted into voltage signals through a motor driving power amplifier plate to drive two servo motors to conduct the real-time adjustment on the gestures of the platform to keep stabilization of an object to be stabilized. The light two-freedom-degree camera stabilized platform has the advantages of being good in stability, high in accuracy, small in size, wide in adjustment scope and suitable for aerial photographing.

Description

technical field [0001] The invention relates to a light two-degree-of-freedom camera stabilization platform device, which belongs to the technical field of inertial navigation and guidance. Background technique [0002] Aerial photography can clearly express geographical forms. In addition to being a photographic art, it is also used in military affairs, transportation construction, water conservancy projects, ecological research, urban planning, etc. However, during flight photography, the aircraft will be affected by the aircraft and the airflow, and the aircraft body cannot be kept stable, which makes it difficult for the airborne camera to take high-precision shots of the designated area. The high-performance camera stabilization platform can effectively suppress the impact of various disturbances in the air on the camera, which can reduce the requirements for aerial photography aircraft, reduce the dependence of shooting on various environmental factors such as weather,...

Claims

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Application Information

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IPC IPC(8): G05D3/12
Inventor 程向红汤世松陆源邵知宇卞骁炜邢亚亮
Owner SOUTHEAST UNIV
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