Performance-Invariant Control of Active Magnetic Bearings Based on Dynamic Gain Shaping and Its Parameter Robustness Analysis.

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Bibliographic Details
Title:	Performance-Invariant Control of Active Magnetic Bearings Based on Dynamic Gain Shaping and Its Parameter Robustness Analysis.
Authors:	Zhang, Ping¹ 415621328@qq.com, Wang, Xingjie² 15101451549@163.com, Hong, Weiliang¹ 18198027326@163.com, Guo, Junke¹ 15294036291@163.com
Source:	IAENG International Journal of Applied Mathematics. Jul2026, Vol. 56 Issue 7, p2842-2855. 14p.
Subjects:	Magnetic bearings, Robust control, Feedback control systems, Energy storage, Impact loads
Abstract:	High-speed active magnetic bearings (AMBs) in flywheel energy storage systems (FESSs) are susceptible to performance degradation and reduced control consistency under sudden load variations and parameter drift. To address this issue, this study proposes a performance-preserving control strategy based on dynamic gain shaping (DGS). By designing state-dependent, time-varying gains, the proposed method dynamically shapes the system's equivalent stiffness and damping, thereby compensating for model mismatch and external disturbances within a unified control framework. An AMB-FESS system is used as a case study, and comparative simulations are conducted to evaluate the proposed DGS method against a benchmark ACAC+RLS control scheme under abrupt load disturbances and parameter mismatch conditions. The results demonstrate that DGS achieves significantly improved peak response characteristics and faster convergence compared to ACAC+RLS. Moreover, it maintains nearly consistent performance over a wide range of parameter variations while requiring lower control energy. These results highlight the effectiveness of the proposed approach for robust AMB control and demonstrate its strong potential for practical engineering applications. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	High-speed active magnetic bearings (AMBs) in flywheel energy storage systems (FESSs) are susceptible to performance degradation and reduced control consistency under sudden load variations and parameter drift. To address this issue, this study proposes a performance-preserving control strategy based on dynamic gain shaping (DGS). By designing state-dependent, time-varying gains, the proposed method dynamically shapes the system's equivalent stiffness and damping, thereby compensating for model mismatch and external disturbances within a unified control framework. An AMB-FESS system is used as a case study, and comparative simulations are conducted to evaluate the proposed DGS method against a benchmark ACAC+RLS control scheme under abrupt load disturbances and parameter mismatch conditions. The results demonstrate that DGS achieves significantly improved peak response characteristics and faster convergence compared to ACAC+RLS. Moreover, it maintains nearly consistent performance over a wide range of parameter variations while requiring lower control energy. These results highlight the effectiveness of the proposed approach for robust AMB control and demonstrate its strong potential for practical engineering applications. [ABSTRACT FROM AUTHOR]
ISSN:	19929978