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arXiv 1602.07736eess.SYcs.SY
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具备增强故障敏感性的风速数据传感器故障诊断研究

Robust Air Data Sensor Fault Diagnosis With Enhanced Fault Sensitivity Using Moving Horizon Estimation

Delft Center for Systems and Control, Delft University of Technology(代尔夫特系统与控制中心,代尔夫特理工大学)

Yiming Wan, Tamas Keviczky, Michel Verhaegen

AI总结:

本文研究了风速数据传感器在风的影响下鲁棒性故障诊断,提出基于移动时间窗估计的约束残差生成器,通过利用已知风界来提高故障敏感性,通过分析KKT条件证明其改进源于故障激活的不等式约束,利用空客模拟器验证了方法优势。

摘要:

本文研究了在风的影响下多个风速数据传感器故障的鲁棒故障诊断。由于风和潜在故障同时影响被监控传感器,鲁棒性和故障敏感性之间的权衡具有挑战性。与传统不考虑任何约束的残差生成器不同,我们提出了一种使用移动时间窗估计的约束残差生成器。主要贡献是通过利用已知的风界来提高故障敏感性。通过分析所提出的移动时间窗估计问题的KKT条件,证明这种改进源于故障激活的不等式约束。当移动时间窗估计问题中的加权矩阵调整以提高对风的鲁棒性时,其故障敏感性并不像传统无约束残差生成器那样简单降低。相反,当故障足够大以激活某些不等式约束时,其故障敏感性会增加。这种故障敏感性提高不仅局限于该特定应用,但可以通过任何基于移动时间窗估计的残差生成器实现。使用高保真度的空客模拟器来说明所提出方法在故障敏感性方面的优势。

英文摘要:

This paper investigates robust fault diagnosis of multiple air data sensor faults in the presence of winds. The trade-off between robustness to winds and sensitivity to faults is challenging due to simultaneous influence of winds and latent faults on monitored sensors. Different from conventional residual generators that do not consider any constraints, we propose a constrained residual generator using moving horizon estimation. The main contribution is improved fault sensitivity by exploiting known bounds on winds in residual generation. By analyzing the Karush-Kuhn-Tucker conditions of the formulated moving horizon estimation problem, it is shown that this improvement is attributed to active inequality constraints caused by faults. When the weighting matrices in the moving horizon estimation problem are tuned to increase robustness to winds, its fault sensitivity does not simply decrease as one would expect in conventional unconstrained residual generators. Instead, its fault sensitivity increases when the fault is large enough to activate some inequality constraints. This fault sensitivity improvement is not restricted to this particular application, but can be achieved by any general moving horizon estimation based residual generator. A high-fidelity Airbus simulator is used to illustrate the advantage of our proposed approach in terms of fault sensitivity.

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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