A Disturbance Compensation Control Strategy for Rotational Speed Standard Device Based on AMB System

Area of Science:

• Mechanical Engineering
• Control Systems Engineering
• Sensor Technology

Background:

• Rotational speed standard devices are crucial for calibrating passive rotational speed sensors.
• Rotor eccentricity in these devices causes unbalanced forces, impacting accuracy and damaging bearings.

Purpose of the Study:

• To propose and validate a method for suppressing unbalanced forces in rotational speed standard devices.
• To improve the accuracy and longevity of speed calibration equipment.

Main Methods:

• Development of an active magnetic bearing (AMB) force compensation system.
• Establishment of a force feedback control system model with AMB as the actuator.
• Design of a PI controller for disturbed force control.
• Verification using a semi-physical simulation experimental platform.

Main Results:

• The AMB force compensation system significantly reduced unbalanced vibration forces.
• Reductions of 84.4% at 30 Hz, 81.6% at 90 Hz, and 79.8% at 150 Hz were achieved.
• The system demonstrated effectiveness in a semi-physical simulation.

Conclusions:

• The proposed AMB force compensation system is effective in suppressing unbalanced forces in rotational speed standard devices.
• This technology enhances the reliability and accuracy of rotational speed sensor calibration.
• Active magnetic bearings offer a viable solution for mitigating rotor unbalance issues.