An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a sound pressure sensor capable of detecting vibration upon rotation of the rotor by contactlessly measuring a sound pressure generated from vibration upon rotation of the rotor.

A system and method for measuring the deflections of a test object, such as a rotor or machine shaft. The system includes at least one probe/input circuit assembly in communication with a Host Data Manager. The at least one probe sensor one probe/input circuit assembly comprising a probe sensor and input circuit. The probe sensor having an ultrasonic speaker and an ultrasonic microphone. The probe sensor includes a temperature and relative humidity sensor. The input circuit comprising a microcomputer that generates deflection analysis data, and probe health diagnostics. The Host Data Manager in communication with at least one probe sensor one probe/input circuit assembly providing modal analysis.

The present invention relates to a rubbing position identification device for a rotating machine provided with a fixed part and a rotating part. This device is provided with an AE sensor, an axial vibration sensor and a rubbing position identification unit. In the case of rubbing occurring in the rotating machine, the rubbing position identification unit calculates the AE phase, which corresponds to the peak of an envelope determined on the base of change over time in the AE signal detected by the AE sensor, and the axial vibration phase, which corresponds to the high spot position of the rotating part specified on the basis of the change over time in the axial vibration signal detected by the axial vibration sensor, and, on the basis of the phase difference between these, identifies the circumferential-direction position of where rubbing has occurred in the rotating machine.

Systems and methods for detecting an issue with a starter are provided. One example aspect of the present disclosure is directed to a method for detecting an anomaly with an air turbine starter. The method includes receiving, by one or more controllers, data indicative of a frequency associated with an integrated air turbine starter from one or more sensors located on a stationary portion of the air turbine starter to monitor a rotating portion of the air turbine starter. The method includes determining, by the one or more controllers, an anomaly associated with the integrated air turbine starter based at least in part on the data indicative of the frequency. The method includes providing, by the one or more controllers, a notification indicative of the anomaly associated with the integrated air turbine starter.

A device, optimization method and system for cooperative matching of heat dissipation and noise are disclosed. A hood is mounted on a base, and a power device, a fan and a radiator are mounted in the hood; an output shaft of the power device is fixedly connected to a rotary shaft of the fan through a bearing pedestal to drive the fan to rotate, and the bearing pedestal is fixed on the base; the radiator is fixed on a radiator support, and a lead screw assembly is disposed on the base, and is used for changing the relative distance between the radiator and the fan; and a fan cover is mounted on a side, facing the fan, of the radiator, and a plurality of anemographs are disposed on the other side of the radiator, and a plurality of microphones are symmetrically disposed on two sides of the fan.

A pump monitoring system includes a controller and a microphone for detecting sound waves. The controller is configured to receive an audio signal from the microphone representing sound waves generated by the vacuum pump. The controller processes the received audio signal to generate a frequency domain representation of the audio signal. The frequency domain representation of the audio signal is analysed to identify at least one fault condition frequency component indicative of a fault condition. A fault condition signal is output to identify the fault condition in dependence on the identification of the at least one fault condition frequency component. In a further embodiment, the pump monitoring system comprises a vibration sensor for detecting vibrations. The present invention also relate to a vacuum pump; a method of monitoring a vacuum pump; and a nontransitory computer-readable medium.

There is described a shaft shear event detection method. The method comprises obtaining a demodulated waveform of a shaft oscillation wave superimposed on a shaft rotational speed signal, comparing the amplitude to an amplitude threshold, detecting oscillation when the amplitude threshold is exceeded for a plurality of samples, and detecting a shaft shear when oscillation continues for a predetermined time limit.

An aircraft propulsion unit including two distinct fan spools, and including a first duct and a second duct extending downstream of the two fan spools, the propulsion unit including a control ring disposed on one of the ducts, downstream of one of the fan spools, with at least one annular internal wall extending in an interior space of the duct, the control unit of the control ring being configured to modify the shape of the internal wall, and to cause an air passage cross section in the duct to vary at the ring, a device for acquiring acoustic signals generated by acoustic waves propagating downstream of the fan spools, and a device for processing the acoustic signals, configured to measure a dephasing between the acoustic waves and to control the control ring depending on the dephasing.

A test bench for turbomachine comprising: an installation zone for turbomachine; an active system for attenuating the noise emissions produced by the turbomachine. The active system includes an attenuation zone with emitters such as loudspeakers; a first microphone placed downstream of the turbomachine; and a second microphone placed downstream of the attenuation zone. The system reduces the turbomachine waves on the basis of the measurements from the first microphone and from the second microphone. The invention also proposes a method for attenuating the noise emissions from the turbomachine tested in the test bench.

A system for controlling an operation of a combustor in a gas turbine that includes: an acoustic sensor configured to periodically measure a pressure of the combustor and generate a raw data stream having the pressure data points resulting from the periodic measurements; and a blowout detection unit configured to receive the raw data stream from the acoustic sensor. The blowout detection unit may include a processor and a machine-readable storage medium on which is stored instructions that cause the processor to execute a procedure related to a detection of a blowout precursor. The procedure may include an ensemble approach in which the detection of the blowout precursor depends upon a outcomes generated respectively by separate detection analytics.