Light-type triaxial ISP (inertially stabilized platform) system using aerial remote sensing technology

Abstract

The invention provides a light-type triaxial ISP (inertially stabilized platform) system using an aerial remote sensing technology, comprising a base, four linear vibration dampers, a rolling framework, a pitching framework, a direction framework, two MEMS (micro-electromechanical system) accelerometers, three MEMES gyroscopes, three DC (direct current) brushless torque motors, three sets of reduction gears, three photoelectric encoders and three framework servo control circuits, wherein the base is connected with a plane by the four linear vibration dampers so as to separate linear vibration; the rolling framework and the pitching framework are used for tracking the local geographical level and rotate around the X axis and the Y axis respectively; and the direction framework is used for tracking heading and rotates around the Z axis. The control part drives the three DC brushless motor frameworks to carry out compensation isolation on angular motion of the plane in accordance with angular rate information of the frameworks provided by the three MEMS gyroscopes and attitude information provided by a POS (position and orientation system) or the two EMES accelerators. The light-type triaxial ISP system has the characteristics of high accuracy, high load bearing / self weight ratio, wide stable range, small volume and light weight as well as self-attitude reference, and is suitable for stabilizing the camera visual axis in light-small type aerial remote sensing systems.

Description

technical field [0001] The invention belongs to the technical field of aviation remote sensing, and relates to a light-weight aerial remote sensing three-axis inertial stabilization platform system, which is suitable for the aviation remote sensing system with light and small aircraft as the flight platform, and can be used in the fields of aviation remote sensing, basic surveying and mapping, military reconnaissance and the like. Background technique [0002] The high-precision real-time motion imaging of the high-resolution earth observation system requires the ideal motion of the platform, but the motion of the platform is affected by various disturbances, resulting in complex multi-mode high-order random motion, resulting in the degradation of motion imaging quality. The high-precision inertial stabilization platform is responsible for supporting and stabilizing the load, which can effectively isolate the influence of various disturbance moments in the air on the stabilit...

AI Technical Summary

Problems solved by technology

However, the existing lightweight inertial stabilization platforms still have many deficiencies

For example: Although SSM150 has high stability accuracy and large load / self-weight ratio, its weight and volume are relatively large; AeroStab-2 has a small weight and volume, but its stability accuracy and load / self-weight ratio are low; in addition, There is also the problem that the stable range is small, and the attitude reference cannot be provided without POS

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