Phase deviation compensation control method for double-shaft precision centrifuge

Abstract

The invention discloses a phase deviation compensation control method for a double-shaft precision centrifuge, and relates to the technical field of double-shaft precision centrifuges. The method comprises the following steps: S1, acquiring the rotating speed V1 of a main shaft of the double-shaft precision centrifuge, and regarding the V1 as an initial rotating speed instruction of a slave shaft to obtain a corresponding phase lag amount theta 1; S2, acquiring a main shaft phase Pos1, regarding the Pos1 as a target phase and an original stepping instruction of a slave shaft, and summing the phase lag amount theta1 and the original stepping instruction Pos1 of the slave shaft to obtain a corrected slave shaft phase instruction Pos2; S3, performing synchronous measurement on the main shaft phase and the slave shaft phase to obtain a whole-circle mean value theta2 of the deviation of the main shaft phase and the slave shaft phase, and summing the corrected slave shaft phase instruction Pos2 and theta2 to obtain a compensated slave shaft phase instruction Pos3; S4, taking the Pos3 as a slave axis phase driving signal, and completing the elimination of the phase lag amount.

Description

technical field [0001] The invention relates to the technical field of a double-shaft precision centrifuge, in particular to a phase deviation compensation control method for a double-shaft precision centrifuge. Background technique [0002] Precision centrifuges are important instruments and equipment used for inertial instrument calibration, and are mainly divided into single-axis and double-axis precision centrifuges. Among them, the structural feature of the double-axis precision centrifuge is that the slave shaft is installed at the end of the main shaft, and the axes of the main shaft and the slave shaft are parallel. Through the synchronous reversal of the main shaft and the slave shaft, zero angular velocity input can be achieved, which can significantly improve the calibration of inertial instruments such as gyroscopes. precision. [0003] In order to realize the synchronous reversal of the two-axis precision centrifuge, the method currently used is to detect the p...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to achieve the phase locking requirement of the arc-second level by directly compensating the phase drive signal of the slave axis.

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