An error correction blade tip-timing method to improve the measured accuracy of blade vibration displacement during unstable rotation speed
Mechanical Systems and Signal Processing（2022）
Abstract
•The calculation errors caused by unstable rotation speed are analyzed.•A new method is proposed to eliminate calculation errors of vibration displacement.•The feasibility of EC-BTT method are verified by simulation and experimental data.
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Key words
Rotor blade,Blade tip-timing (BTT) method,Blade vibration,Unstable rotation speed,Error-correcting BTT (EC-BTT)
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