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Single shaft coupling bearing unit motor and flexible gyroscope formed by same

A flexible gyroscope and coupling bearing technology, which is applied in the field of flexible gyroscopes, can solve the problems of poor rotation stability of the drive shaft, high vibration and noise of the gyroscope motor, and low mechanical environment resistance, so as to optimize the structure and reduce the electromagnetic Interference moment, light weight effect

Active Publication Date: 2013-10-09
BEIJING INST OF AEROSPACE CONTROL DEVICES
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AI Technical Summary

Problems solved by technology

Existing flexible gyroscopes have the disadvantages of large power consumption, large size, and heavy weight. It is difficult to meet the requirements of small size, high precision, and long life for gyroscopes at the same time. low environmental capability

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  • Single shaft coupling bearing unit motor and flexible gyroscope formed by same
  • Single shaft coupling bearing unit motor and flexible gyroscope formed by same
  • Single shaft coupling bearing unit motor and flexible gyroscope formed by same

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The expression of the drift error of the flexible dynamic gyroscope is shown in formula (1):

[0029] ω=M / H…………………………………(1)

[0030] In formula (1): ω—gyroscope drift error;

[0031] M—disturbance torque acting on the gyroscope;

[0032] H—Gyroscope angular momentum.

[0033] The expression of the angular momentum H of the gyroscope is shown in formula (2):

[0034] H=C×N……………………………………(2)

[0035] In formula (2): C—gyroscope moment of inertia;

[0036] N—gyroscope rotor rotation speed.

[0037] Therefore to improve the accuracy of the gyroscope and reduce the drift error ω of the gyroscope, it can be carried out from two aspects, one is to reduce the disturbance moment M, and the other is to improve the angular momentum H of the gyroscope. The miniaturized high-precision flexible gyroscope of the present invention adopts ...

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Abstract

The invention discloses a single shaft coupling bearing unit motor and a flexible gyroscope formed by the motor. The single shaft coupling bearing unit motor comprises a supporting system which is mainly composed of a high-precision shaft coupling bearing and a lower end bearing, the structural rigidity of the supporting system is improved, the friction torque of the operation of the motor is reduced, the stability and the rotation precision of the rotating axis of the motor are improved, the drift factor of the gyroscope is reduced, and the working life is prolonged. A dumbbell type symmetrical structure is adopted in the flexible gyroscope, a gyrorotor is supported by adopting a high-precision flexible connector, an overall fly wheel and high-performance permanent magnet alloy form a closed magnetic circuit, the structure of a torquer is optimized, electromagnetic interference torque is reduced, the adjustment of air gap damping torque generated by the rotation of a rotor is facilitated, and the drift coefficient value is adjusted.

Description

technical field [0001] The invention relates to a motor and a flexible gyroscope composed of the motor, in particular to a single-coupling bearing unit motor and a flexible gyroscope composed of the motor, belonging to the technical field of mechatronics. Background technique [0002] The gyro motor is the most important core component in the flexible gyroscope, and it also determines the performance of the gyroscope to a large extent: accuracy, life, preparation time, outline size, and some other aspects of performance. The book "Motor Design of Gyroscope" edited by I. En. Olerauf of the former Soviet Union pointed out that the accuracy of the gyroscope depends to a large extent on the moment of momentum guaranteed by the motor and its stability. In the instrument, the bearing and housing of the gyro motor usually have the smallest stiffness in the gyroscope, and the elastic and inelastic movement of the motor's own center of mass has a considerable value. Therefore, the gy...

Claims

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Application Information

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IPC IPC(8): H02K5/16G01C19/04
Inventor 关宇美刘朝霞蒋苏丹邹琪张敏红孙奎强朱佩霞
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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