Spacecraft three-override control full-link disturbance transmission verification system and verification method

Abstract

The invention discloses a spacecraft three-override control full-link disturbance transmission verification system and verification method. The designed method is used for quantitatively analyzing three-override control technologies such as ultra-high precision pointing, ultra-high stability control and ultra-sensitive control of an optical load. Firstly, designing a physical test system which iscomposed of a star body (simulated by a triaxial air bearing table), an active pointing ultra-quiet platform, a gravity unloading support, a scenery simulator, a collimator and the like; then establishing a structure-control-optical analysis model according to the physical model, and designing a controller according to the structure-control-optical analysis model; and finally, quantitatively analyzing the full-link disturbance transfer characteristics of the three-override control through an experiment to realize quantitative analysis and evaluation of the influence of disturbance vibration onthe quality of the observed image of the three-override platform.

Description

technical field [0001] The invention belongs to the field of attitude control of spacecraft, and relates to a verification system and verification method for full-link disturbance transmission of three-superior control of spacecraft, which realizes the analysis and evaluation of the impact of disturbance on the quality of observation images of three-superior platform through physical tests, and evaluates the optical load. Three ultra-control performance indicators. Background technique [0002] As the demand for astronomical observation continues to increase, the control system is required to realize the three-superior control performance of optical loads, that is, to realize the three-superior control of optical loads such as "ultra-high precision pointing", "ultra-high stability control", and "ultra-agility". There are a series of vibration-generating devices on the satellite, including the high-speed rotor in the moment gyroscope, the stepping motor in the solar wing driv...

AI Technical Summary

Problems solved by technology

The high-speed rotating parts of the actuator will inevitably produce high-frequency jitter and micro-vibration, which directly affects the imaging quality of the optical load, and cannot achieve ultra-high precision pointing and ultra-high stability control performance of the optical axis of the optical load

[0006] 2. Unable to intuitively evaluate the three-super-control technology from the perspective of images

[0007] The star body and the load are rigidly connected in the single-stage spacecraft system. The micro-vibration of the star body directly affects the image clarity of the optical load, and the optical load control performance cannot be directly evaluated through the image clarity.

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