Critical Vibration and Control of the Maglev High-Speed Motor Based on μ-Synthesis Control.

Area of Science:

• Mechanical Engineering
• Control Systems Engineering
• Rotordynamics

Background:

• Maglev motors are crucial for high-speed rotating machinery like compressors and molecular pumps.
• Miniaturization and higher speeds push Maglev motor rotors beyond bending critical speeds, posing vibration control challenges.

Purpose of the Study:

• To address critical vibration suppression in Maglev high-speed motors with flexible rotors.
• To develop and validate a control strategy for mitigating rotor vibrations.

Main Methods:

• Established a system model for the Maglev motor.
• Analyzed rotordynamics of the flexible rotor and performed modal truncation for order reduction.
• Designed a μ-controller with specific weighting functions to manage modal uncertainty.

Main Results:

• Successfully designed and implemented a μ-controller for vibration suppression.
• Experimental validation confirmed the effectiveness of the μ-control strategy.
• Demonstrated significant suppression of critical vibrations in the flexible Maglev rotor.

Conclusions:

• The μ-control approach is effective for suppressing critical vibrations in flexible rotors of Maglev high-speed motors.
• This method offers a viable solution for enhancing the stability and performance of high-speed rotating machinery.