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Active vibration control in 4-DOF magnetic bearing systems using CPO-PID controller

Aug 2026 · International Conference on Advanced Sensing and Intelligent Systems · Vol 14309, pp. 143090C - 143090C-6 · 0 citations · 14 references
Engineering

Abstract

This paper presents a novel CPO-PID control strategy for suppressing unbalanced vibration in 4-DOF Active Magnetic Bearing (AMB) systems. A dynamic model of the AMB-rotor system is established, and the Crested Porcupine Optimizer (CPO) is employed to optimize feedforward compensation parameters for a conventional PID controller. This approach generates precise counteracting currents to neutralize synchronous disturbance forces. A MATLAB/Simulink co-simulation platform is developed for validation. Comparative results demonstrate that the CPO-PID controller achieves superior vibration suppression, reducing peak displacement by 26% compared to the uncontrolled case. It also outperforms benchmark GA-PID and BAS-PID controllers in terms of settling time and overshoot. Robustness analysis under parameter variations confirms the effectiveness and reliability of the proposed strategy for high-speed rotating machinery.

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