Vision-based measurement method for vibration force suppression effect of magnetic suspension rotor

Abstract

The invention discloses a vision-based measurement method for a vibration force suppression effect of a magnetic suspension rotor. Dynamic modeling is performed on a system containing a magnetic suspension rotor with the unbalanced mass; with a same-frequency bearing force as a direct control target, an objective of eliminating the same-frequency bearing force is achieved; and the vibration is measured by using the visual vibration measurement technology. According to the invention, the method can be applied to the rotor system using the magnetic bearing as a supporting structure. Both the current stiffness force and the residual stiffness force caused by displacement are considered, so that the same-frequency bearing force can be suppressed effectively; and non-contact measurement is realized by using the vision-based vibration measurement technology and the effect of the same-frequency vibration control algorithm is verified.

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.

Images