Magnetic levitation universal momentum ball device

Abstract

The invention discloses a magnetic suspension universal momentum sphere device and a realizing method thereof. The magnetic suspension universal momentum sphere device comprises a momentum sphere, a position control electromagnetic system, a rotation control electromagnetic system, a sphere body state detection system and a central control system, wherein the momentum sphere is used for rotation, the position control electromagnetic system is used for generating a magnetic force in any direction for the momentum sphere, the rotation control electromagnetic system is used for generating a rotating torque capable of rotating towards any direction for the momentum sphere, the sphere body state detection system is used for detecting the operation state of the momentum sphere and the central control system is used for controlling the electromagnetic system and the sphere body state detection system and receiving operation state data of the momentum sphere, detected by the sphere body state detection system. The momentum sphere is adopted for replacing a momentum wheel, therefore the magnetic suspension universal momentum sphere device is capable of realizing rotation in any direction; the rotating torque enabling the sphere body to rotate is generated through a rotating magnetic field, therefore, the magnetic suspension universal momentum sphere device realizes non-contact, non-resistance and accurate rotation control; and the sphere body is magnetically suspended through the magnetic force, therefore the friction force is thoroughly eliminated.

Description

technical field [0001] The invention relates to an angular momentum exchange technology for attitude control of a spacecraft or a robot, in particular to a magnetic levitation universal momentum ball device and a realization method thereof. Background technique [0002] The spacecraft is subjected to various disturbance moments during flight, resulting in changes in the attitude of the spacecraft, and attitude control must be performed. The commonly used one is the angular momentum exchange system, including "single degree of freedom system" and "multiple degree of freedom system". [0003] The "single-freedom system" can only adjust the attitude in one direction for each degree of freedom, such as momentum wheels. In order to ensure that three degrees of freedom can be adjusted, at least three momentum wheels must be installed. At the same time, taking into account system redundancy, additional flywheels need to be added, resulting in increased system weight, volume, and p...

AI Technical Summary

Problems solved by technology

[0006] 1. The momentum flywheel is used as the rotating structure, and the direction of moment of inertia is single;

[0007] 2. Although some multi-degree-of-freedom systems can deflect within a certain range, the deflection angle is too small to achieve deflection in any direction;

[0008] 3. The contact-type motor power device is used, so that there is friction, which not only reduces the efficiency, but also increases the cumulative error

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