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• W4293222034 abstract "Micro-electromechanical-systems (MEMS) based sensors are used for monitoring the state of machines in condition-based maintenance tasks. This approach is applied at tram depots for the purpose of identifying faulty wheels on trams in order to eliminate defective trams at the entry or dispatch gates. The application of MEMS-based sensors for the detection of wheel faults is the focus of this study. A method for processing of the collected sensor data is developed. It is based on assessing the energy of vibrations at different frequency bands. Maximal Overlap Discrete Wavelet Packet Transform (MODWPT) is used for obtaining a description of the sensor data. The task of finding the energy threshold for detecting faulty wheels, frequency band and parameters of MODWPT which most distinctly distinguish the wheels is the goal of the method. The weighted difference (DW) between the extreme values of energy in a frequency band for normal and faulty wheels is proposed as the measure of the ability to distinguish the wheels. The search for the solution is formulated as a discrete optimisation problem of maximising this measure. Both the simulation and experimental results indicate that faulty wheels have greater vibration energy than normal wheels. The properties of this approach are discussed and evaluated." @default.
• W4293222034 created "2022-08-27" @default.
• W4293222034 creator A5049935974 @default.
• W4293222034 creator A5073915844 @default.
• W4293222034 date "2022-08-24" @default.
• W4293222034 modified "2023-10-17" @default.
• W4293222034 title "Detection of Tram Wheel Faults Using MEMS-Based Sensors" @default.
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• W4293222034 doi "https://doi.org/10.3390/s22176373" @default.
• W4293222034 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36080832" @default.
• W4293222034 hasPublicationYear "2022" @default.
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