An electrostatic levitation space-based ultra-quiet platform system

Abstract

The invention relates to an electrostatic suspension type space-based super quiescent platform system, which comprises a quiescent reference system, a loading platform, an on-planet electrode chamber, a capacitance detection circuit, a digital control system, a drive circuit and a micro-thruster, wherein the quiescent reference system is fixedly linked with the loading platform into a whole through a vacuum chamber base; the on-planet electrode chamber is fixed on a satellite body; the loading platform is suspended in the on-planet electrode chamber and driven by the one-planet electrode chamber through electrostatic force to travel by tracking a reference mass block; the capacitance detection circuit is capable of acquiring the relative position of the loading platform in the on-planet electrode chamber; control signals of the electrostatic force and the micro-thruster are generated by the digital control system; the electrostatic force is loaded by the drive circuit to the on-planet electrode chamber to drive the loading platform to track the reference mass block, so that the primary drag-free control is realized; the satellite body and the on-planet electrode chamber are driven by the micro-thruster to track the loading platform, so that the secondary drag-free is realized. The space-based super quiescent platform system has a simple structure, is precise and controllable in driving force, low in rigidity, realizes zero rigidity coupling and effective suppression on micro-vibration in high or low frequency band.

Description

technical field [0001] The invention relates to an electrostatic suspension type space-based ultra-static platform system, which belongs to the technical field of space vibration reduction and vibration isolation. Background technique [0002] With the continuous deepening of space exploration activities such as high-resolution space remote sensing, ultra-long-distance laser communication, and deep space telescopes, the payloads carried on satellites are becoming more and more sophisticated, and the micro-vibration effect of satellites has become a non-negligible factor for the load performance. Constraints. At present, the active suppression methods of on-board micro-vibration mainly include satellite drag-free control and the use of piezoelectric or giant magnetostrictive ultra-quiet platforms. However, the former is mainly aimed at the disturbance of extraterrestrial low-frequency non-conservative forces, and cannot overcome high-frequency micro-vibrations. The latter ha...

AI Technical Summary

Problems solved by technology

The use of a higher stiffness connecting material is actually a vibration damping platform design method suitable for the ground. The design method has high stiffness. It does not need a high stiffness support platform for the weightless environment on the planet. Too high stiffness is not conducive to the realization of high precision vibration damping.

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