A training device for astronauts to carry objects in a simulated microgravity environment on the ground

Abstract

The invention provides a training device for object carrying by simulating microgravity environment on ground. A horizontal plane operation training device utilizes a radial magnetic bearing and an axial magnetic bearing to eliminate friction moment generated when the astronauts push and pull the objects and to balance the weights of the objects and the training device, the astronauts conduct push-pull training on the objects with the different weights in the horizontal direction, and cooperative training of object carrying by the two persons can also be achieved; a vertical plane operation training device enables the heavy objects and the training device to be in a suspension state through the axial magnetic bearing, and the effect that through training of lifting and putting the heavy objects with the different weights by one person or cooperatively by the two persons, the space microgravity environment is felt is achieved; and motion information of the astronauts is collected in real time through an angle sensor, a force sensor and a speed sensor, and then the motion effect in the microgravity environment simulated by the device is conveniently sorted and analyzed later. The training device is simple in structure, low in cost and convenient to operate, and the microgravity environment of the astronauts can be efficiently trained.

Description

technical field [0001] The invention relates to a training device for astronauts to carry objects in a simulated microgravity environment on the ground, belonging to the field of ground simulation. Background technique [0002] my country's aerospace industry is also developing rapidly. At the same time, there will be more space operation tasks for astronauts. This requires better technical support to provide astronauts with operational training so that astronauts can adapt to the future space environment. . Although astronauts cannot feel the gravity of the object in the weightless environment of space, the object still has mass and center of gravity affected by orbital mechanics, and the inertial force still exists. The motion characteristics and mechanical characteristics of large objects in space are the same as those in the earth's gravity environment. very different. For example, in space, an astronaut can easily lift a heavy object, but it is not easy to grasp it, be...

AI Technical Summary

Problems solved by technology

However, there is no simulation for moving objects of different shapes and different masses in space, and neither can achieve high-level, long-term motion simulation

The suspension method can maintain microgravity in the direction of a single degree of freedom, but the accuracy of microgravity simulation is not high, it takes up a lot of space, and the friction force suffered by the rope during movement is large, which seriously affects the accuracy of the test; neutral buoyancy is simulated in a water tank, astronauts It is still affected by gravity, which is different from the weightless environment in space. For example, in a water tank, due to the resistance of water to the astronauts, the astronauts can still maintain stability under slight disturbances, but in space, this is not the case. , a small disturbance may cause big problems, such as the drift of the astronaut and the instability of the body; the air suspension method can only realize the plane microgravity experiment, and it is powerless for the complex motion test of the three-dimensional space of the object; the drop tower and the weightless aircraft can Simulates the microgravity effect of space, but cannot maintain the microgravity level for a long time

In addition, on-orbit operation of astronauts requires the simulation of the space mission environment. Existing methods include arranging a scale model similar to the International Space Station in a neutral buoyancy pool. The cost of using this method is relatively high

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