A suspended gravity-free simulated test bed and its application method

Abstract

The invention provides a suspended zero-gravity simulated test bed comprising an active tracking subsystem, a plurality of passive tracking subsystems and a plurality of suspension systems, wherein the active tracking subsystem comprises a first guide rail and a plurality of active moving platforms moving along the first guide rail; the plurality of passive tracking subsystems are respectively fixedly arranged on the plurality of active moving platforms; each passive tracking subsystem comprises a second guide rail and a passive moving platform; and the plurality of suspension systems are respectively fixedly arranged on the plurality of passive moving platforms. The suspended zero-gravity simulated test bed has the beneficial effect that the zero-gravity simulated test bed provided by the invention adopts an active and passive mixed tracking mode, has a power-off protection function and can be used for a zero-gravity simulated test of a complex movement mechanism needing multi-point suspension. The invention also provides a using method of the suspended zero-gravity simulated test bed.

Description

technical field [0001] The invention relates to a non-gravity simulation test bed, in particular to a non-gravity simulation test bed and a test method with planar active and passive mixed tracking and vertical closed-loop suspension tension control. Background technique [0002] The zero-gravity simulation test is of great significance for the development and testing of the space mechanism. It can verify the design of the space mechanism by simulating the response of the system in a zero-gravity environment. [0003] At present, the general non-gravity test bed and test methods are as follows: [0004] (1) The air flotation platform and the air flotation method use the downward air flotation device to balance the gravity, which can obtain very small movement resistance and good gravity balance effect, high simulation accuracy, unlimited simulation time, and high reliability , strong adaptability. The disadvantage is that it is difficult to achieve movement in three-dimens...

AI Technical Summary

Problems solved by technology

The disadvantage is that it is difficult to achieve movement in three-dimensional space;

[0005] (2) Neutral pool and water floatation method, using water buoyancy to offset gravity, can simulate a gravity-free state in the case of three-dimensional movement, but requires high waterproof performance of the equipment, and the movement resistance is large, and the test cost is high

[0006] (3) The weightless flight test realizes the weightless environment through free fall, which has the advantage of good simulation effect, but the cost is expensive, and the duration is often only a dozen seconds;

The advantage of this method is that it can be tested for a long time, but the disadvantage is that the simulation accuracy is not high and it is difficult to realize and control the tracking of multiple suspension points

[0008] At present, the non-gravity test bed with multiple suspension points in China is a single-degree-of-freedom passive tracking system, while the active tracking test bed is a single suspension point system, neither of which can satisfy the gravity-free simulation of a three-dimensional space moving manipulator Experimental requirements

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