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- W2803845035 abstract "Brushless DC motors are widely used, and their working temperatures, regarding as degradation processes, are nonlinear and multistage. It is necessary to establish a nonlinear degradation model. In this research, our study was based on accelerated degradation data of motors, which are their working temperatures. A multistage Wiener model was established by using the transition function to modify linear model. The normal weighted average filter (Gauss filter) was used to improve the results of estimation for the model parameters. Then, to maximize likelihood function for parameter estimation, we used numerical optimization method- the simplex method for cycle calculation. Finally, the modeling results show that the degradation mechanism changes during the degradation of the motor with high speed. The effectiveness and rationality of model are verified by comparison of the life distribution with widely used nonlinear Wiener model, as well as a comparison of QQ plots for residual. Finally, predictions for motor life are gained by life distributions in different times calculated by multistage model." @default.
- W2803845035 created "2018-06-01" @default.
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- W2803845035 date "2018-05-01" @default.
- W2803845035 modified "2023-10-18" @default.
- W2803845035 title "Multistage degradation modeling for BLDC motor based on Wiener process" @default.
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- W2803845035 doi "https://doi.org/10.1088/1757-899x/351/1/012009" @default.
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