Sensor selection of helicopter transmission systems based on physical model and sensitivity analysis |
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Authors: | Lyu Kehong Tan Xiaodong Liu Guanjun Zhao Chenxu |
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Affiliation: | a Science and Technology on Integrated Logistics Support Laboratory, National University of Defense Technology, Changsha 410073, China; b Department of Electronic Technology, Officer's College of CAPF, Chengdu 610213, China |
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Abstract: | 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 (CIs) are presented, and the optimal CIs 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 monitoring of helicopter transmission systems, and it is effective to reduce the test cost and improve the system's reliability. |
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Keywords: | Condition indicators Health indicator Helicopter transmission systems Mann-Kendall test Physical model Sensitivity analysis Sen slop estimator Sensor selection |
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