Six-freedom large-amplitude vibration active isolation platform

Abstract

The invention relates to an active isolation platform with six freedom degrees and large amplitude vibration, which consists of an upper platform, a lower platform, a two-freedom-degree precision Hooke hinge, a large-load gapless precision Hooke hinge and a large amplitude vibration active isolation rod, and adopts the configuration of a six-rod parallel mechanism; the large-load gapless precision Hooke hinge is a hinge for providing three rotating freedom degrees; an upper rotation body, an upper yoke, a cross axle component and a lower yoke are mutually and movably connected from the top down together through a bearing to form three independent rotating freedom degrees; the large amplitude vibration active isolation rod consists of a rotor, a stator and a position sensor; and the rotor is at the upper part, the stator is at the lower part, and the rotor moves up and down relative to the stator and counteracts vibration transferred from the stator. The platform has the moving capability of six freedom degrees; and the large amplitude vibration active isolation rod as an active component of the platform has the advantages of quick response speed, high positioning accuracy and strong bearing capability, and can effectively isolate and restrain high-frequency and large-amplitude vibration when the platform is under large loading conditions.

Description

(1) Technical field [0001] The invention relates to a six-degree-of-freedom large-amplitude vibration active isolation platform, which belongs to the field of precision machinery. (2) Background technology [0002] With the introduction of missions such as vehicle-mounted and airborne optical observation and laser aiming, the demand for six-degree-of-freedom large-amplitude vibration active isolation platforms is becoming increasingly urgent. The working environment of vehicles and aircraft is complex, and the optical and laser equipment installed on them are always in a state of bumps and vibrations, which makes it very difficult to lock the target during driving, especially at long distances. Deviation will lead to missing the target. Therefore, it is often necessary to install a vibration isolation device between these optical and laser equipment and the vehicle body and fuselage to isolate the vibration to improve the observation accuracy of the optical equipment and th...

AI Technical Summary

Problems solved by technology

[0003] Traditional passive vibration isolation devices have a good isolation effect on high-frequency and small-amplitude vibrations, but it is difficult to isolate low-frequency and large-amplitude vibrations. In recent years, active vibration isolation devices developed at home and abroad have also focused on small-amplitude vibration isolation. Therefore, The application of optical observation equipment and laser aiming equipment in large-amplitude vibration environments is greatly restricted

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