Sensor selection of helicopter transmission systems based on physical model and sensitivity analysis  

作　　者：Lyu Kehong Tan Xiaodong Liu Guanjun Zhao Chenxu 

机构地区：[1]Science and Technology on Integrated Logistics Support Laboratory, National University of Defense Technology [2]Department of Electronic Technology, Officer’s College of CAPF

出　　处：《Chinese Journal of Aeronautics》2014年第3期643-654,共12页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 51175502)

摘　　要：In the helicopter transmission systems, it is important to monitor and track the tooth damage evolution using lots of sensors and detection methods. This paper develops a novel approach for sensor selection based on physical model and sensitivity analysis. Firstly, a physical model of tooth damage and mesh stiffness is built. Secondly, some effective condition indicators （Cls） are presented, and the optimal Cls set is selected by comparing their test statistics according to Mann-Kendall test. Afterwards, the selected CIs are used to generate a health indicator （HI） through sen slop estimator. Then, the sensors are selected according to the monotonic relevance and sensitivity to the damage levels. Finally, the proposed method is verified by the simulation and experimental data. The results show that the approach can provide a guide for health monitor- ing of helicopter transmission systems, and it is effective to reduce the test cost and improve the system＇s reliability.In the helicopter transmission systems, it is important to monitor and track the tooth damage evolution using lots of sensors and detection methods. This paper develops a novel approach for sensor selection based on physical model and sensitivity analysis. Firstly, a physical model of tooth damage and mesh stiffness is built. Secondly, some effective condition indicators （Cls） are presented, and the optimal Cls set is selected by comparing their test statistics according to Mann-Kendall test. Afterwards, the selected CIs are used to generate a health indicator （HI） through sen slop estimator. Then, the sensors are selected according to the monotonic relevance and sensitivity to the damage levels. Finally, the proposed method is verified by the simulation and experimental data. The results show that the approach can provide a guide for health monitor- ing of helicopter transmission systems, and it is effective to reduce the test cost and improve the system＇s reliability.

关 键 词：Condition indicators Health indicator Helicopter transmissionsystems Mann-Kendall test Physical model Sensitivity analysis Sen slop estimator Sensor selection 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计] TP212[自动化与计算机技术—检测技术与自动化装置]