A variable-stroke adaptive adjustment quasi-zero stiffness device and parameter calibration method

Abstract

A variable-stroke self-adaptive adjustment quasi-zero stiffness device and parameter calibration method, including: integrating sphere, target, collimator, pointing measuring instrument, disturbance source, inertia simulation tooling, quasi-zero stiffness suspension adjustment device, optical air flotation Platform; integrating sphere, target and collimator are installed on the air bearing table; integrating sphere provides light source, target provides point target information, collimator simulates infinity; pointing measuring instrument is the measured object, pointing measuring instrument and inertia simulation tooling Fixed connection; three disturbance sources are installed on the inertia simulation tool to provide small disturbance and inertia for the pointing measuring instrument; the quasi-zero stiffness suspension adjustment device suspends the inertia simulation tool to provide a free boundary environment; the quasi-zero stiffness suspension adjustment device , pointing measuring instrument, disturbance source and inertia simulation tooling constitute a set of two pendulum system as a whole. The invention comprehensively evaluates and quantitatively analyzes the influence of the extremely high-precision space pointing measuring instrument under the micro-vibration environment of the platform.

Description

A quasi-zero stiffness device and parameter checking method for variable stroke adaptive adjustment technical field [0001] The present invention relates to the technical field of micro-vibration testing and testing of extremely high-precision spatial pointing measuring instruments. In particular, a A quasi-zero stiffness device for self-adaptive adjustment of variable stroke and a method for parameter checking. Background technique [0002] The space pointing measurement instrument is used as the core component of the spacecraft attitude pointing measurement and the space target pointing measurement. By performing photoelectric imaging of stars or other space targets, the attitude information of the spacecraft or the position of the space target can be calculated. Point to information. High-performance spacecraft requires the accuracy of space pointing measurement instruments to reach more than 0.1 arcseconds, which has been neglected in the past. The influence of pl...

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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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