Combined Amplitude and Frequency Measurements for Non-Contacting Turbomachinery Blade Vibration

摘要: A method and apparatus for measuring the vibration of rotating blades, such as turbines, compressors, fans, or pumps, including sensing return signal from projected energy and/or field changes a plurality sensors mounted on machine housing. One more has narrow measurement data is processed to provide referenced time arrival each blade, therefore blade tip deflection due vibration. wide measurement, providing history approaching receding frequency content relative magnitudes active mode(s) By combining overall magnitude with modes, total vibratory stress state can be determined.