Ultra-low disturbance moment rotary shafting

Abstract

The invention relates to an ultralow disturbance torque rotating shaft system which comprises a main shaft. The upper end of the main shaft is connected with a working table face, the main shaft penetrates a gas bearing, the main shaft and a gas bearing are coaxially installed, the lower end of the main shaft is connected with a brushless torque motor, an electric conduction sliding ring is arranged below the main shaft, and a sliding ring servo system is arranged below the electric conduction sliding ring. The sliding ring servo system comprises the electric conduction sliding ring, a siliconphotocell, a silicon photocell detecting plate, a sliding ring servo motor and a sliding ring shaft; the electric conduction sliding ring is composed of a rotor and a stator, the main shaft and the rotor are coaxially installed without contact, the lower end of the main shaft is connected with an additional weight, the electric conduction sliding ring is arranged below the additional weight and is not in contact with the additional weight, the stator of the electric conduction sliding ring is connected with a sliding ring shaft, and the sliding ring servo motor and the sliding ring shaft arecoaxially installed; the silicon photocell detecting plate is installed on the lower end face of the additional weight, and the silicon photocell is installed at the position, corresponding to the silicon photocell detecting plate, of the stator of the electric conduction sliding ring; and the rotor of the electric conduction sliding ring is connected with the working table face of a rotary tablethrough a flexible cable and rotates together with the working table face.

Description

technical field [0001] The invention belongs to the field of rotary shafting, in particular to an ultra-low disturbance moment rotary shafting. Background technique [0002] High-precision navigation devices such as gyroscopes are important feedback elements in guidance and control systems. In order to improve navigation accuracy, these navigation devices need to be calibrated independently to reduce the impact of drift errors. For the inertial test equipment itself, the high-precision test turntable must solve the phenomenon of low-speed crawling, and at the same time ensure that the spindle system has sufficient position accuracy and speed accuracy when performing space flips. [0003] The traditional single-condition air bearing can meet the position and speed requirements of a single load at a fixed position, but for inertial product test turntables, multi-axis linkage is required to meet the test requirements of the tested product, so the traditional single The structu...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, on the basis of the design of the large-size air bearing shaft, to provide a design method and a design structure model of a space-turning spindle within a wide range of load ranges, which solves the problem of the traditional The structure of the air-bearing spindle under single working conditions cannot meet the problem of application in the state of space flipping, which expands the application range of air-bearing in the field of precision testing instruments

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