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Identifying trending model coefficients with an ensemble Kalman filter – a demonstration on a force model for milling

机译:用集合卡尔曼滤波器识别趋势模型系数 - 用于研磨力模型的演示

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This paper extends the ensemble Kalman filter (EnKF) for inverse problems to identify trending model coefficients. This is done by repeatedly inflating the ensemble while maintaining the mean of the particles. As a benchmark serves a classic EnKF and a recursive least squares (RLS). As an example serves the identification of a force model in milling, which changes due to the progression of tool wear. For a proper comparison, the true values are simulated and augmented with white Gaussian noise. The results demonstrate the feasibility of the approach for dynamic identification while still achieving good accuracy in the static case. Further, the inflated EnKF shows a remarkably insensitivity on the starting set but a less smooth convergence compared to the classic EnKF.
机译:本文扩展了Ensemble Kalman滤波器(ENKF),以识别趋势模型系数的逆问题。这是通过反复膨胀整体,同时保持粒子的平均值来完成。作为基准测试,作为经典ENKF和递归最小二乘(RLS)。作为示例,该示例用于识别研磨中的力模型,这是由于刀具磨损的进展而变化。为了适当的比较,真正的值是模拟和增强白色高斯噪声的。结果表明了动态识别方法的可行性,同时仍在静态案例中实现良好的准确性。此外,膨胀的ENKF在起始集上显示出显着的不敏感性,而是与经典ENKF相比的较小趋同的收敛性。

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