초록 ▼

A vibration monitoring system analyzes tachometer signals of a rotating engine to ascertain the period of rotation from which sampling pulses at predetermined intervals can be generated. Sampled accelerometer data is processed by a nonrecursive tracking digital filter to determine peak velocity or d

A vibration monitoring system analyzes tachometer signals of a rotating engine to ascertain the period of rotation from which sampling pulses at predetermined intervals can be generated. Sampled accelerometer data is processed by a nonrecursive tracking digital filter to determine peak velocity or displacement of rotating engine. In a different operating phase, apparatus determines the rotational location of the peak relative to an index or reference point on the rotating engine. The magnitude and location of the peak can be signaled for subsequent correction of the imbalance. The rotational velocity is monitored so that changes in velocity during a measurement invalidate the results and cause a repetition of the measurement cycles.

대표청구항 ▼

Apparatus to enable the balancing of the rotating component of complex machinery comprising: (a) transducer means for detecting and singalling an imbalance condition in the rotating component; (b) signalling means coupled to the rotating component for signalling frequency of rotation; (c) sampling m

Apparatus to enable the balancing of the rotating component of complex machinery comprising: (a) transducer means for detecting and singalling an imbalance condition in the rotating component; (b) signalling means coupled to the rotating component for signalling frequency of rotation; (c) sampling means coupled to said signlling means for generating a predetermined number of sampling pulses during each revolution of the rotating machinery; (d) data acquisition means, coupled to said transducer means and said sampling means, operative in response to said sampling pulses for providing said predetermined number of data samples each revolution; (e) analog to digital converting means for providing transducer signals in digital form; (f) digital filtering means responsive to applied digitized data samples for creating signals representative of the magnitude of a parameter of imbalance of the rotating component; and (g) storage and comparison means for recording the signals dreated in said digital filtering means for determining the signal of greatest magnitude and its time of occurrence; wherein an imbalanced rotating component can be monitored during operation to determine the magnitude of the imbalance.