基于滑模观测器的传感器故障检测#br#

中国民航大学学报 ›› 2019, Vol. 37 ›› Issue (3): 54-59.

基于滑模观测器的传感器故障检测#br#

陶立权，刘程，王伟，王倩

（中国民航大学民用航空器适航审定技术重点实验室，天津300300）

出版日期:2019-06-27 发布日期:2020-04-01
作者简介:陶立权（1978—），男，天津人，副研究员，硕士，研究方向为航空发动机性能.
基金资助:

Sensor fault detection based on sliding mode observer#br#

TAO Liquan, LIU Cheng, WANG Wei, WANG Qian#br#

（Civil Aircraft Airworthiness Key Lab of Tianjin, CAUC, Tianjin 300300, China）

Online:2019-06-27 Published:2020-04-01

摘要/Abstract

摘要： 针对故障检测中漏检和误检问题，提出了一种基于残差和故障估计相结合的故障检测方法。首先运用Schur补引理将观测器增益求解方法转化为非线性矩阵不等式约束下的多目标凸优化问题，设计合理的增益以解决鲁棒性问题；其次根据残差的随机特性，将数理统计应用于残差阈值的确定，使得检测结果更为可靠；再通过设计滑模观测器产生残差实现第一重故障检测，并通过等效输出误差注入原理完成故障估计实现第二重故障检测，从而减少漏检和误检情况；最后通过仿真算例验证所提方法的有效性。

关键词: 故障检测, 漏检误检, 滑模观测器, 残差, 故障估计

Abstract: Aiming at the missing detection and erroneous detection in fault detection, a method based on residual and fault estimation is proposed. Firstly, with the application of Schur complementary lemma, the method of sliding-mode observer gain matrix is transformed into a multi-objective convex optimization problem under the restrict of LMI,and a reasonable gain is designed to solve the robustness problem. Secondly, according to the residual randomness, statistical theory is introduced to determine the fault detection threshold, which makes the fault detection results more credible. Then, in order to reduce missing detection and erroneous detection, the sliding mode observer is designed to generate the residual and realize the first fault detection, the fault estimation is conducted by equivalent output injection theory to realize the second fault detection. Finally, simulation instance proves the effectiveness of the proposed methods.

Key words: fault detection, missing detection and erroneous detection, sliding mode observer, residual, fault estimation

中图分类号:

TP273
V249.1

陶立权, 刘程, 王伟, 王倩. 基于滑模观测器的传感器故障检测#br#[J]. 中国民航大学学报, 2019, 37(3): 54-59.

TAO Liquan, LIU Cheng, WANG Wei, WANG Qian. Sensor fault detection based on sliding mode observer#br#[J]. Journal of Civil Aviation University of China, 2019, 37(3): 54-59.

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