A Vision-Based Measurement Method of Vibration Force Suppression Effect of Magnetic Suspension Rotor

Abstract

The invention discloses a vision-based method for measuring the vibration force suppression effect of a magnetic levitation rotor, which performs dynamic modeling on a system containing a mass unbalanced magnetic levitation rotor, takes the same-frequency bearing force as the direct control target, and effectively eliminates the same-frequency vibration The purpose of the force, and proposed to use the visual vibration measurement technology to measure the vibration. The invention can be used in a rotor system with magnetic bearings as a supporting structure, not only considering the current stiffness force, but also considering the residual stiffness force caused by displacement, which can more effectively suppress the vibration force of the same frequency, and adopts the vibration measurement technology based on vision Realize non-contact measurement and verify the effect of the same-frequency vibration control algorithm.

Description

technical field [0001] The invention relates to a visual measurement method for zero-force control aiming at the same-frequency vibration of a magnetic suspension rotor system, and belongs to the field of magnetic suspension control technology and measurement. Background technique [0002] Vibration in the maglev rotor system is a matter of great concern, and the same frequency vibration is mainly caused by the mass imbalance of the maglev rotor. When the rotor is rotating, the vibration force will be transmitted to the mechanical casing, which will affect the accuracy and performance of the magnetic bearing equipment, and even collide with the casing and cause some dangerous accidents. For the control of the vibration of the maglev rotor, many researchers have proposed different methods, such as the least mean square (Least Mean Square, LMS) algorithm, repeated learning algorithm, and adding the same frequency displacement stiffness force compensation to the current loop to...

AI Technical Summary

Problems solved by technology

[0003] Accelerometers are usually used for contact measurement of vibration, and the measurement accuracy is relatively high. However, when the mass of the measured object is small, the additional mass of the accelerometer will affect the measurement results; when measuring large objects, a large number of The accelerometer will be time-consuming, labor-intensive

And in some dangerous occasions such as high temperature, high pressure, vacuum, etc., it is not suitable to use accelerometers for measurement.

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