Five-freedom-degree initiative magnetic-suspension inertially stabilized platform

Abstract

A five-freedom-degree initiative magnetic-suspension inertially stabilized platform comprises a platform frame system, a drive system, a shock reducing system, a magnetic-suspension support system, an inertial measurement system and a turning angle measurement system. The drive system achieves isolation of angular motion of an airplane according to a control instruction. The shock reducing system isolates high-frequency coil vibration of the airplane. The magnetic-suspension support system achieves five-freedom-degree full-initiative suspension of a direction frame, isolates low frequency vibration of airplane, reduces friction, improves carrying capacity and can initiatively control torsion of the direction frame and effectively improve the stabilizing precision of the platform. The inertial measurement system and the turning angle measurement system monitor platform angular motion information caused by airplane angular motion. The five-freedom-degree initiative magnetic-suspension inertially stabilized platform achieves application of an initiative magnetic-suspension technology in the inertially stabilized platform, effectively isolates the airplane angular motion and the vibration, improves the carrying capacity and the stabilizing precision and is suitable for aerial remote sensing, target tracking and the like.

Description

technical field [0001] The invention belongs to the technical field of aviation remote sensing, and relates to a five-degree-of-freedom magnetic levitation inertial stable platform installed inside an aircraft, isolating the angular motion and vibration of the aircraft, and realizing the load perpendicular to the ground. It is suitable for the fields of aviation remote sensing, basic surveying and mapping, etc. Vehicle, ship and other servo tracking. Background technique [0002] The aerial remote sensing three-axis inertial stabilization platform is one of the key equipment for airborne earth observation. Its function is to support the imaging load and isolate the attitude angle movement and external disturbance of the flight carrier in three directions, so that the visual axis of the imaging load can always track in the inertial space. And perpendicular to the local level, improving imaging resolution. However, due to the limitation of the aviation application environment...

AI Technical Summary

Problems solved by technology

[0003] In the existing aviation inertial stabilization platform design, however, there are many deficiencies in the existing inertial stabilization platform, which are generally manifested as systematic deficiencies in volume, load / weight ratio, accuracy, etc., that is, it is difficult to find a combination of the above advantages. The product

Due to commercialization and other factors, foreign products with small size and light weight tend to have low precision and low bearing capacity, while products with high precision often have large volume and weight; PAV30 and the latest product PAV80, domestic stable platforms such as patents 200910089155.6 and 201110214640.9, etc., the frame shaft system is purely mechanically supported. When carrying a large load, each frame bearing bears a lot of pressure, thus increasing the mechanical bearing. Friction, when each frame shaft rotates to control the load posture, the friction will further affect the control accuracy

The orientation frame is in direct contact with the platform body, and fine-tuning of the attitude cannot be achieved, making it difficult to further improve its accuracy

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