Three-axis micro-disturbance moment motion simulator for spacecraft ground simulation

Abstract

The invention discloses a tri-axis micro-interference torque motion simulating device for the ground simulation of space vehicles. The device comprises a base, an outer ring, an outer ring bearing pair, a middle ring, a middle ring bearing pair, an inner bearing pair and an instrument platform. Compared with the prior art that an air flotation ball bearing is adopted, the device has the advantages that air flotation bearings are adopted in the outer ring bearing pair, the middle ring bearing pair and the inner bearing pair, so that the development difficulty of the motion simulating device can be effectively reduced; a motor can be utilized for driving and controlling, conventional angular measurement devices including an optical grating, an induction synchronizer and the like can be used for measuring operation angle information of the space vehicles, so that the simulation result has good accuracy and veracity, and the operation is convenient; and a tri-axis micro-interference torque is simulated by virtue of the outer ring, the outer ring bearing pair, the middle ring, the middle ring bearing pair and the inner bearing pair, so that the revolution range of the motion simulating device can be expanded, and the analogue simulation of the large-scale tri-axis micro-interference torque can be realized.

Description

technical field [0001] The invention relates to the technical field of spacecraft ground simulation, in particular to a three-axis micro-disturbance moment motion simulation device for spacecraft ground simulation. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] The three-axis air bearing table is the key device for the full physical simulation of the spacecraft attitude control system. It is used to test the performance of the satellite control system in the full physical simulation experiment. It is an important means and method in the process of space vehicle development. Usually, the three-axis air bearing is built on the basis of ball bearings. The ball bearings rely on compressed air to form a high-pressure air film to float the simulated platform, simulating the operating environment of the micro-disturb...

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Problems solved by technology

[0004] The disadvantage of this structure is: the angle cannot be measured using the usual measurement methods, such as inductive synchros, photoelectric code discs, gratings, etc., so measurement has always been the bottleneck that plagues its accuracy improvement; the rotation range of the two degrees of freedom of the ball bearing Very small; can not use the usual motor to drive its operation, can only use jet, flywheel, etc.

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