Method for controlling shaft by decomposing measurement of rotating shaft into static and perturbation components

By filtering and decomposing the rotation axis motion signal, static components and disturbance components are extracted, and actuator commands are generated to correct the movement of the rotation axis, which solves the problem of offset and vibration of the rotation axis during rotation, and achieves fine correction and stability improvement of the rotation axis.

CN119687104APending Publication Date: 2025-03-25SKF MAGNETIC MECHATRONICS SAS
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Patent Information

Application Number
CN202411269186.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-25
Filing Date
2024-09-11
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The prior art is difficult to effectively correct the offset and vibration caused by defects, deformation, gyroscope effect or gravity effect during rotation.

Method used

By obtaining a measurement signal representing the motion of the rotation axis, filtering and decomposing to extract the static components and perturbation components, comparing with the set point, an actuator command is generated to finely correct the motion of the rotation axis.

Benefits of technology

The fine correction of the rotating shaft is achieved, reducing the use of the actuator, and improving the balance and stability of the rotating shaft.

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Abstract

The method for controlling a rotating shaft comprises the following steps: acquiring a signal to be filtered (step 160); filtering the signal to be filtered, and for each time-frequency pair of the signal to be filtered, decomposing the signal to be filtered into a static component and a disturbance component (step 170); for each time-frequency pair, comparing the static components with respect to a setpoint (step 190); for each time-frequency pair, comparing the perturbation component with respect to the setpoint (step 200); and generating a command for an actuator associated with the shaft such that the actuator modifies the rotation and / or positioning parameters of the rotating shaft (step 210).
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