HGL Aurora Analysis Software

Multi-Channel Data Acquisition and Analysis

HGL Aurora Analysis Software

HGL Dynamics Multi-Channel Data Acquisition Instruments

 

HGL Dynamics Aurora Software is used in all HGL Dynamics Multi-Channel Data Acquisition and Analysis Instruments, including Pegasus, Hummingbird, Dragonfly8, and Firefly.

HGL Dynamics Aurora Analysis Software Suite consists of the following vibration analysis modules (additional Vibration condition Monitoring Modules are shown in Category 18 Vibration condition Monitoring):

Aurora DataViewer

  • Time & Frequency domain visualisation & analysis
  • Worldwide connectivity – Thin Client/Server Architecture
  • Interactive viewing & cursor interrogation
  • Mode definition & alignment
  • Order & mode tracking
  • Phase analysis with Cartesian and Polar plots
  • Third-octave analysis (also 1/6, 1/12, 1/24)
  • Rainflow and cycle-counting analysis

More features:

  • Shaft Centre-line & Orbit analysis
  • Data Manipulation and Derived Channel Generation
  • Data validation – remove erroneous data from analysis
  • Data tagging – highlight regions of specific interest
  • Workflow Persistency – the system ‘remembers’ previous analysis and recreates it when reloading a data file
  • Multi-function plot types
  • User-configurable displays
  • User-definable colour maps

Aurora-DataViewer is part of the Aurora Analysis system, an integrated analysis platform that provides all the tools and capabilities required for summary and detailed analysis of both time and frequency domain data from a single application window.

The Aurora-DataViewer is the primary application for viewing and analysing processed dynamic data interactively. It can be used to view either time-domain or frequency-domain calibrated data.

One of the Aurora-DataViewer’s main benefits is the flexibility of its plot types. The main screen of the application consists of a number of different plots. These plots are all derived from the same data, and they present various aspects of the data in different ways. HGL Dynamics can provide additional plot formats if required for specific applications.

The standard output types include:

  • Spectral Density and Waterfall Plots
  • Time History Plot
  • Amplitude Envelope and Spectrum Plots
  • Spectral Peak-hold Plot
  • Reference Peak-hold / Spectral Component Plot
  • Phase plots between multiple parameters
  • Shaft Speed vs. Time Plot
  • Performance Parameter vs. Reference Plot
  • Orbit Plots
  • Fractional octave (or constant percentage band) plots

The Aurora DataViewer display also provides the user with the ability to generate their own display templates which they can save, edit and load. The configurable displays allow task-specific plot arrangements to be created for individual analysis tasks. These options are available in the time domain and the frequency domain.

Users may manipulate the measured data and create a Derived channel by applying mathematical operations to the original analysed data. This is particularly useful for applying temperature corrections to strain gauge calibrations. These operations may be chained together, so that the result of one mathematical operation may be used as the input to a further calculation.

Any validation changes, feature annotations (data tagging), or data manipulation operations applied by the user are saved between sessions, so that operations don’t have to be repeated and to allow other users to benefit from the work.

Aurora tornado

  • High-quality multi-channel analysis using native signal processing
  • Batch and Rapid processing options
  • Continuous queue- and priority-based operation
  • User selectable frequency bandwidths
  • Frequency decomposition against any available reference parameter
  • Worldwide connectivity – Thin Client/Server Architecture
  • Fully interactive processing task configuration and control
  • Remote control and interrogation
  • Multi-user access

Aurora-Tornado is part of the Aurora Analysis system, an integrated analysis platform that provides all the tools and capabilities required for summary and detailed analysis of both time and frequency domain data from a single application window.

The Aurora-Tornado is the primary application for processing the raw dynamic data to generate calibrated processed files which can be viewed and interrogated in the Aurora-DataViewer module. Aurora-Tornado can be used to generate either time-domain or frequency-domain calibrated data and can be used to process a single request or to batch process multiple requests from multiple users.

The Aurora-Tornado system provides a stand-alone data analysis server at the centre of a network of user workstations (or can be run on a single laptop remotely from base). The processing engine at the heart of the Tornado turns raw (ADCs) time-domain data into meaningful results in either the time or frequency domains. The processing applies relevant calibrations to the data and then re-samples the data to the frequency bandwidth requested by the user. FFT processing is then performed for frequency domain jobs, where the FFTs are located against the specified reference channel and/or with a prescribed overlap.

The Aurora-Tornado allows you to leave your data-processing system to run secure in the knowledge that your results will be ready as soon as possible, with the most urgent analysis tasks fast-tracked to appear in minutes. With an HGL Aurora-Tornado you can achieve these results with minimum set-up and administration times. Moreover the Aurora-Tornado links seamlessly with the HGL Hercules archiving and data management solution, such that data sets required for processing are automatically restored without any intervention from the user.

The processing performed by the Aurora-Tornado can be used in many applications and is particularly appropriate for those requiring high channel-count, long-duration, high-resolution data capture from remote sites.

Applications include:

  • Engine maintenance and overhaul testing
  • Industrial turbine maintenance
  • Seismic data analysis
  • Noise monitoring and analysis
  • Structural vibration monitoring
  • Trim balancing
  • Narrow band frequency analysis

Aurora Tip Clearance

  • Raw time series data sets (containing discrete pulses) are processed to produce Tip Clearance results files
  • Calibration Curves are used to convert from DNS (mV) into Clearance (mm)
  • Interactive viewing & cursor interrogation
    • Tip Clearance Data
    • Raw Data
  • Multi-function plot types

More Features:

  • Worldwide connectivity – Thin Client/Server Architecture
  • Orbit plot with Shaft Centre-Line processing
  • Tip clearance files provide access to ‘real’ probe channels as well as ‘collated-pseudo’ blade channels – the probe channels are searched for all instances of events from Blade X which are then collated to form a new channel

Aurora-TipClearance is part of the Aurora Analysis system, an integrated analysis platform that provides all the tools and capabilities required for summary and detailed analysis of both time and frequency domain data from a single application window.

The Aurora-TipClearance application is used for processing the raw dynamic data (containing pulses which relate to blade passing events) to generate calibrated tip clearance processed files which can be viewed and interrogated in the Aurora-RawViewer module.

The Aurora-TipClearance application allows the user to submit tip clearance processing requests which are performed by the Aurora-TipClearance Server. The Aurora-TipClearance Server identifies each pulse in the raw data and extracts the height of the pulse. The pulse height in mV is then converted to clearance through the use of a calibration curve (also produced by the system).

The processing by the Aurora-TipClearance Server includes several algorithms and techniques for rejecting false pulses (that might be generated from noise spikes in the analogue front end), as well as inserting artificial pulses into the processed data files when real pulses are missed (as a result of any data drop out from the analogue front end).

The Aurora-TipClearance Server supports processing of many different pulse shapes including bi- and tri-modal pulses and can be adapted upon request to detect different pulse shapes.

Once the processed tip clearance file has been produced, the user can view and interact with both the Raw and Processed data in the Aurora-RawViewer module.  Within this module the user can view the tip clearance data superimposed over the Raw data in an Amplitude vs. Time plot; the user can also view the tip clearance data in an Orbit plot and then ‘play’ through the data to see the variation during changing operating conditions. The Aurora-RawViewer module offers other features such as data export (in CSV and binary formats), data interrogation, re-plotting the data against speed, as well as flexible and highly configurable chart axes.

Aurora Torsion

  • Raw time series data sets (containing discrete pulses) are processed to produce Torsion results files
  • Twist and/or Torque processing carried out
  • Interactive viewing & cursor interrogation
    • Torsion Data
    • Raw Data

More features:

  • Worldwide connectivity – Thin Client/Server Architecture
  • Multi-function plot types
  • FFT Analysis Option
  • Characterisation of pulse events enabling absolute twist analysis

Aurora-Torsion is part of the Aurora Analysis system, an integrated analysis platform that provides all the tools and capabilities required for summary and detailed analysis of both time and frequency domain data from a single application window.

The Aurora-Torsion application processes pulse event data from probes either end of the engine shaft, using the difference in time of arrival of pulses to calculate the twist of the shaft. Calibrated Torsion processed files are generated which can be viewed and interrogated in the Aurora-RawViewer module.

The Aurora-Torsion application allows the user to submit torsion processing requests which are performed by the Aurora-Torsion Server.

The user can select to calculate torque as well as twist during the processing. If this option is selected, more information must be provided including various material properties of the shaft.

Characterisation of the channel data for pulse identification/numbering is used within the system to reference the Twist/Phase for a selection of manoeuvres in an engine run to a common zero. The aim of characterisation for pulse identification is to allow the user to process a range of manoeuvres in a period of engine running in such a manner as to be able to stitch the results together without having to make any assumptions about the change in Twist between each manoeuvre.

Once the processed Torsion file has been produced, the user can view and interact with both the Raw and Processed data in the Aurora-RawViewer module. Within this module the user can view the Torsion data superimposed over the Raw data in an Amplitude vs. Time plot.

The FFT Auxiliary plot option allows the user to perform an FFT on the phase and torque data. The FFT Analysis is performed by re-sampling the Phase and Torque data to generate sample points that are equally spaced in the time domain (seconds) rather than in the rotational domain. Once the data has been re-sampled an FFT is performed that produces an X-Axis of Hz rather than Engine Order which is what would be produced if the FFT were to be performed on the original rotational domain data.

The Aurora-RawViewer module offers other features such as data export (in CSV and binary formats), data interrogation, re-plotting the data against speed, as well as flexible and highly configurable chart axes.

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