A Magnetic Suspension Control Sensitive Gyroscope with Co-located Detection and Control

Abstract

The invention relates to a detection-control co-located magnetically suspended control sensitive gyroscope which comprises a stationary part and a rotating part. The stationary part comprises an uppersealing cap, a middle gyro chamber, a lower sealing cap, a sealing ring, an upper gyro chamber, a lower gyro chamber, a motor assembly stator, a Lorentz force magnetic bearing stator, an axial spherical magnetic bearing stator, an adjustment washer ring, a radial spherical magnetic bearing stator, a deflection displacement sensor assembly and a protection bearing; the rotating part includes a gyro inner rotating shaft, a gyro outer rotating disc assembly and a gyro rotor lock net. The displacement detection point and magnetic bearing control point co-located magnetically suspended control sensitive gyroscope eliminates errors caused by a sensor and a magnetic bearing transfer matrix, and improves gyroscopic control torque precision and attitude sensitive precision. In addition, protectiveclearances and magnetic clearances between the stators and the rotors are spherical shells, negative moments of a translational motion magnetic bearing caused by rotor deflection can be eliminated, rotor deflection angle is increased, and gyroscopic control torque and acting time can be increased.

Description

technical field [0001] The invention relates to a sensitive gyroscope for magnetic levitation control, in particular to an inner rotor magnetic levitation spherical control sensitive gyroscope in which the detection point of the rotor displacement coincides with the translational control point of the magnetic bearing and can be used for attitude control and control of very stable and ultra-quiet space-based platforms. attitude detection. Background technique [0002] The inertial mechanism based on momentum exchange has the advantages of high control precision and long life, and has been widely used in the attitude control of spacecraft platforms. The inertial mechanism supported by traditional mechanical bearings has zero-crossing friction, viscous moment and mechanical vibration, and the vibration is uncontrollable, and the precision of control torque is low. The magnetic suspension inertial mechanism adopts magnetic suspension bearing support technology, which eliminates...

AI Technical Summary

Problems solved by technology

Due to the measurement error of the conversion matrix, and the error changes with time, temperature, and stress, the translational suspension accuracy and deflection angle accuracy of the gyro rotor are reduced, which in turn affects the gyro control torque accuracy of the sensitive gyro

In addition, the protection bearings of the above schemes all use cylindrical deep groove ball bearings. When the gyro rotor precesses to output the gyro control torque, the protection bearing will limit the deflection angle of the gyro rotor, thereby reducing the output time of the gyro control torque, thereby reducing the instantaneous The size of the gyro control torque output

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