基于 NSGA- III 的多目标偏置电流系数优化,适用于带冗余电磁致动器的主动磁轴承

IF 1.5 4区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Shuai Deng, Xin Cheng, Huachun Wu, Yefa Hu
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引用次数: 0

摘要

目的 针对带冗余电磁执行器的主动磁悬浮轴承容错控制中涉及高维、非线性、冲突目标的 EMA 配置,提出了多目标优化配置策略。结果(1) 分析了针对不同失效模式的 EAM,三个优化目标之间的冲突关系。(2)针对不同的 EMA 故障模式,多目标优化配置策略可同时实现有效 EMF、通量裕度和 EMF 稳定性的最优或次优。原创性/价值i)考虑到支撑重建过程中转子位移的变化,提出了一种能准确表征 AMB 动态性能的决策模型。(ii)分析了 EMA 不同失效模式下 AMB 与转子之间的相互作用规律,并提出了冗余 EMA 的配置原则。(iii) 根据 AMB 在支撑重建过程中的动态特性,将有效 EMF、能耗以及期望 EMF 与解耦控制电流之间的皮尔逊相关系数作为目标函数。将 NSGA-III 与决策模型相结合,解决 C0 的多目标优化配置问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi-objective optimization of bias current coefficient based on NSGA- III for active magnetic bearing with redundant electromagnetic actuators
PurposeThe multi-objective optimization configuration strategy is proposed due to the configuration of EMAs in fault-tolerant control of active magnetic bearing with redundant electromagnetic actuators involving high-dimensional, nonlinear, conflicting goals.Design/methodology/approachA multi-objective optimization model for bias current coefficients is established based on the nonlinear model of active magnetic bearings with redundant electromagnetic actuators. Based on the non-dominated sorting genetic algorithm III, a numerical method is used to obtain feasible and non-inferior sets for the bias current coefficient.Findings(1) The conflicting relationship among the three optimization objectives was analyzed for various failure modes of EAMs. (2) For different EMAs' failure modes, the multi-objective optimization configuration strategy can simultaneously achieve the optimal or sub-optimal effective EMF, flux margins, and stability of EMF. Moreover, the characteristics of the optimal Pareto front are consistent with the physical properties of the AMB. (3) Compared with the feasible configuration of C0, the non-inferior configurations can significantly improve the performance of AMB, and the advantages of the multi-objective optimization configuration strategy become more prominent as the asymmetry of the residual supporting structure intensifies.Originality/valuei) Considering the variation of the rotor displacement during the support reconstruction, a decision-making model that can accurately characterize the dynamic performance of AMB is presented. (ii) The interaction law between AMB and rotor under different failure modes of EMAs is analyzed, and the configuration principles for redundant EMAs are proposed. (iii) Based on the dynamic characteristics of AMB during the support reconstruction, effective EMF, energy consumption, and the Pearson correlation coefficient between the desired EMFs and the decoupled control currents are used as objective functions. iv. The NSGA-III is combined with the decision-making model to address the multi-objective optimization configuration problem of C0.
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来源期刊
Engineering Computations
Engineering Computations 工程技术-工程:综合
CiteScore
3.40
自引率
6.20%
发文量
61
审稿时长
5 months
期刊介绍: The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm
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