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- W3130450428 abstract "Blade tip timing (BTT) technique has become a promising way of online damage diagnosis for compressor and turbine blades by monitoring their vibrations. However, there are some disadvantages in previous algorithms for BTT signals, including not high precision, strict sensor layout, signal bandwidth limit, and weak anti-noise ability. To solve these problems, a novel interpolation method for wideband signal reconstruction (IWSR) is presented. Simulations are conducted using a lumped parameter model, which shows that IWSR reconstructs noiseless signals with overall errors mainly below 1%, and identifies the exact frequencies of 5 dB noise signals. In addition, the results validate its signal separation function and verify that its sensor layout is almost arbitrary, and its maximum allowable bandwidth is half the product of sensor number and rotational frequency. Experimental results demonstrate its effectiveness in frequency identification. In conclusion, IWSR provides precise information for real-time blade damage diagnosis, which benefits turbomachinery safety." @default.
- W3130450428 created "2021-03-01" @default.
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- W3130450428 date "2021-05-01" @default.
- W3130450428 modified "2023-10-17" @default.
- W3130450428 title "Interpolation method for wideband signal reconstruction based on blade tip timing measurement" @default.
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- W3130450428 doi "https://doi.org/10.1016/j.measurement.2021.109168" @default.
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