Synchronous Vibration Parameters Identification of Variable Rotating Speed Blades Based on New Improved Two-Parameter Method without OPR Sensor

<div>Ellipse fitting results of vibration displacement difference in two resonance regions: (a) resonance region 1; (b) resonance region 2.</div>

Shock and Vibration

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Figure 12

Figure 12: Synchronous Vibration Parameters Identification of Variable Rotating Speed Blades Based on New Improved Two-Parameter Method without OPR Sensor 

Figure 12 | Synchronous Vibration Parameters Identification of Variable Rotating Speed Blades Based on New Improved Two-Parameter Method without OPR Sensor 