Magnetic suspension flywheel vibration moment suppression method based on synchronous rotation coordinate transformation algorithm

Abstract

The invention relates to a magnetic suspension flywheel vibration moment suppression method based on a synchronous rotation coordinate transformation algorithm, and belongs to the field of magnetic suspension flywheel vibration suppression. The method comprises the steps of: establishing a magnetic suspension flywheel kinetic model; establishing an unbalanced force and an unbalanced moment model based on the model; reconstructing a control system with complex coefficients to simplify the structure of the system and to reduce the orders; introducing the synchronous rotation coordinate transformation by establishing a stationary coordinate system and a rotation coordinate system; and identifying the same-frequency component in the vibration moment using the synchronous rotation coordinate transformation, and taking the obtained same-frequency component as the input of a controller to suppress the same-frequency vibration moment. According to the magnetic suspension flywheel vibration moment suppression method based on the synchronous rotation coordinate transformation algorithm, the vibration moment generated by the mass imbalance of magnetic suspension rotors is suppressed based onthe synchronous rotation coordinate transformation algorithm, thereby achieving the control effect of effectively suppressing the vibration moment under the condition of full speed range and ensuringthe system stability.

Description

technical field [0001] The invention belongs to the field of magnetically suspended flywheel vibration suppression, in particular to a method for suppressing unbalanced vibration moments based on synchronous rotation coordinate transformation. Background technique [0002] Magnetic bearings support the rotor without friction, which makes magnetic bearings a perfect replacement for existing mechanical bearings. However, due to the limitation of the manufacturing process level, the rotor still has mass imbalance, which leads to the misalignment of its main axis of inertia and geometrical main axis. This will generate corresponding unbalanced vibration, and the vibration force generated by the magnetic bearing will have a great influence on the stability of the magnetic levitation flywheel system. Usually, the purpose of the magnetic suspension bearing control system is to control a rotor with 5 degrees of freedom. Generally, the magnetic suspension rotor has two main forms, e...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the shortcomings of the existing maglev flywheel vibration torque suppression algorithm, and provide an algorithm that can effectively suppress the vibration torque within the full speed range and ensure system stability. The transformation algorithm suppresses the vibration torque caused by the mass imbalance of the magnetic levitation rotor, and realizes the control effect of effectively suppressing the vibration torque within the full speed range and ensuring the stability of the system

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