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arXiv 2512.04885eess.SYcs.SY
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具有稳定性的双卡尔曼滤波器用于电化学电池状态估计

Stability-Guaranteed Dual Kalman Filtering for Electrochemical Battery State Estimation

Fuyao University of Science and Technology(福州福耀科技大学);Southwest Jiaotong University(西南交通大学);Nanjing Institute of Technology(南京工程学院)

Feng Guo, Guangdi Hu, Keyi Liao, Luis D. Couto, Khiem Trad, Ru Hong, Hamid Hamed, Mohammadhosein Safari

AI总结:

本文提出了一种稳定性保证的双卡尔曼滤波器,用于提高电化学电池状态估计的准确性和稳定性,实验表明在较大初始误差下能显著降低电量估计误差。

摘要:

准确且稳定的状态估计对电池管理至关重要。尽管双卡尔曼滤波器可以联合估计状态和参数,但滤波器之间的强耦合可能导致在较大的初始误差或模型不匹配情况下发散。本文提出了一种稳定性保证的双卡尔曼滤波器(SG-DKF)方法。基于李雅普诺夫的分析得出一个充分的稳定性条件,导致一种自适应死区规则,当创新超过稳定性界限时暂停参数更新。应用于电化学电池模型时,SG-DKF的准确性与双扩展卡尔曼滤波器相当,并在较大的初始状态误差下将电量RMSE降低超过45%。

英文摘要:

Accurate and stable state estimation is critical for battery management. Although dual Kalman filtering can jointly estimate states and parameters, the strong coupling between filters may cause divergence under large initialization errors or model mismatch. This paper proposes a Stability Guaranteed Dual Kalman Filtering (SG-DKF) method. A Lyapunov-based analysis yields a sufficient stability condition, leading to an adaptive dead-zone rule that suspends parameter updates when the innovation exceeds a stability bound. Applied to an electrochemical battery model, SG-DKF achieves accuracy comparable to a dual EKF and reduces state of charge RMSE by over 45% under large initial state errors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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