Virtual tachometers based on time series filtering
AssigneeSikorsky Aircraft Corporation
InventorsChristopher L. Winslow, Biqing Wu, Mark W. Davis
Life of this patent
Estimating the term…
Abstract
A system and method for receiving a plurality of first inputs from a transducer, where the plurality of first inputs correspond to vibrations of a rotational machine, and filtering the plurality of first inputs to derive a frequency of interest. The system and method then generates a sinusoidal signal at the frequency of interest and a pulse train of one or multiple pulses per revolution at the frequency of interest from the sinusoidal signal. The system and method further identifies a first pulse at a zero crossing within the pulse train and counts zero crossings to define blocks of data for use in time synchronous averaging calculations.
Claims12
A computing device, configured to:
- receive a plurality of first inputs from a transducer, the plurality of first inputs corresponding to vibrations of a rotational machine;
- filter the plurality of first inputs to derive a frequency of interest;
- generate a sinusoidal signal at the frequency of interest;
- generate a pulse train of one or multiple pulses per revolution at the frequency of interest from the sinusoidal signal;
- identify a first pulse at a zero crossing within the pulse train;
- and
- count zero crossings to define blocks of data for use in time synchronous averaging calculations.
A method, comprising:
- receiving, by a computing device, a plurality of first inputs from a transducer, the plurality of first inputs corresponding to vibrations of a rotational machine;
- filtering, by the computing device, the plurality of first inputs to derive a frequency of interest;
- and
- generating, by the computing device, a sinusoidal signal at the frequency of interest;
- generating, by the computing device, a pulse train of one or multiple pulses per revolution at the frequency of interest from the sinusoidal signal;
- identifying, by the computing device, a first pulse at a zero crossing within the pulse train;
- and
- counting, by the computing device, zero crossings to define blocks of data for use in time synchronous averaging calculations.
Dependencies are inferred from the claim text.