Variable-stroke self-adaptive adjustment quasi-zero stiffness device and parameter checking method

Abstract

The invention discloses a variable-stroke self-adaptive adjustment quasi-zero stiffness device and a parameter checking method. The variable-stroke self-adaptive adjustment quasi-zero stiffness device comprises an integrating sphere, a target, a collimator, a pointing measuring instrument, a disturbance source, an inertia simulation tool, a quasi-zero stiffness suspension adjustment device and an optical air floating platform; the integrating sphere, the target and the collimator are mounted on the air floating table; the integrating sphere provides a light source, the target provides point target information, and the collimator simulates infinity; the pointing measuring instrument is a measured object, and the pointing measuring instrument is fixedly connected with the inertia simulation tool; the three disturbance sources are installed on the inertia simulation tool and provide tiny disturbance and inertia for a pointing measuring instrument. The quasi-zero stiffness suspension adjustment device suspends the inertia simulation tool and provides a free boundary environment; the quasi-zero stiffness suspension adjustment device, the pointing measuring instrument, the disturbance source and the inertia simulation tool integrally form a set of two-pendulum system. According to the invention, comprehensive evaluation and quantitative analysis are carried out on the influence of the extremely-high-precision spatial orientation measuring instrument in the platform micro-vibration environment.

Description

technical field [0001] The invention relates to the technical field of micro-vibration testing and testing of an extremely high-precision space pointing measuring instrument. In particular, it relates to a variable stroke adaptive adjustment quasi-zero stiffness device and a parameter checking method. Background technique [0002] The space pointing measurement instrument is the core component of spacecraft attitude pointing measurement and space target pointing measurement. It can solve the attitude information of spacecraft or the pointing information of space target through photoelectric imaging of stars or other space targets. High-performance spacecraft require the accuracy of the space pointing measurement instrument to be more than 0.1 arc seconds, and the impact of the previously neglected platform micro-vibration environment on the space pointing measurement instrument has received great attention. [0003] The sensitive optical components inside the extremely high...

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Problems solved by technology

The ones closest to the present invention are "A Novel Spacecraft On-orbit Ultra-clean Weightless Environment Simulation Test System (CN106477074)", "Satellite Micro-vibration Test Multi-point Suspension System and Its Design Method (CN103482088A)" and "A Method for Using In the test device for the influence of satellite platform micro-vibration on camera imaging (CN105530514A), these three public documents all provide a kind of suspension device, which realizes the suspension of the tested object through flexible ropes or elastic ropes, so as to realize It meets the low stiffness environment required by the test, but these three design methods are still relatively rigid, and do not have the ability of displacement adjustment and direction adjustment alignment, and do not have the extremely high-precision space pointing measuring instrument required for micro-vibration testing. Adjustment alignment and quasi-zero stiffness capability

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