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    Order Tracking
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    Octave Analysis
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    Rotational and Torsional Vibrations
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    Shock Response Spectrum - SRS
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Order Tracking

Order tracking method is a perfect tool to determine the operating condition of the rotating machines (resonances, stable operation points, determining a cause of vibrations). It is extremely powerful in combination with other math modules like torsional analysis, combustion or power analysis. Order tracking is a true ECG for machines.

DSI compatible
DSI compatible
High-speed video
High-speed video
TEDS compatible
TEDS compatible

Main Features

  • TIME, FREQUENCY AND ORDER DOMAIN - AT THE SAME TIME: Due to high sampling and advanced alias free resampling mechanism, data is available in all three domains (time, frequency and order), everything at the same time in one screen and data file, perfectly synchronized
  • ANGLE SENSOR SUPPORT: all angle sensors from tacho, encoder, geartooth, geartooth with missing or double teeth, tape sensors and others are supported to perfectly determine the angle and rotational speed with 10 nsec resolution using Dewesoft Supercounter technology
  • RICH VISUALIZATION: frequency and order 3D plots provide a great tool to determine the health of the machine, Nyquist, bode Campbell plots are available for perfect presentation of the data, orbit analysis with raw or order view is a great tool for turbomachinery analysis
  • ADVANCED MATH: any order and time domain harmonics can be easily extracted with amplitude and phase, available versus rotational speed or time in run up or coast down modes

Order Analysis

Order analysis is a technique for analyzing noise and vibration signals in rotating or reciprocating machinery (engines, compressors, turbines, and pumps). These machines have a variety of parts, each of which contributes unique noise and vibration patterns to those of the whole machine.

With order analysis, you can identify and isolate these patterns to analyze the performance and quality of each machine part individually. 

Dewesoft SuperCounters

Dewesoft data acquisition systems utilize a patented and registered trademark technology called SUPERCOUNTER®.

Counter inputs can measure RPM and angle of rotating machines. In comparison to standard counters, which only output integer numbers one sample later (e.g. 1, 1, 2, 2, 3, 4), SUPERCOUNTERs® are able to extract the accurate values like 1.37, 1.87, 2.37, etc. fully synchronized for time and amplitude. This is done by measuring the exact time of the rising edge of the signal with an additional counter. Our SUPERCOUNTERs® work on a 102.4 MHz time base, independent from the current sampling rate.

Counter inputs are fully synchronized with analog, CAN bus, and other data sources to enable easy applications like balancing, order tracking, and torsional vibrations.

For more information on our SUPERCOUNTER® inputs please navigate to Digital Counter PRO training course.

Order FFT Setup

The order tracking module allows you to select several options before starting the test:

  • Order FFT vs. time - monitors orders over time and not only the current values.
  • Order FFT vs. RPM - monitors current values of orders.
  • Order domain harmonics - complex channels displayed on a 2D graph (we define which harmonics we want to extract).

But don't worry you can always change these settings after you have recorded your measurement. Since Dewesoft X stores the raw data all parameters can be changed and results recalculated in the offline mode. 

Select the RPM limits (upper and lower RPM limit), and whether you want to calculate the waterfall spectrum and order extraction while run-up, while coastdown or both (to cover the whole frequency spectrum).

Delta RPM will define when a new update of the waterfall spectrum and also the extracted order domain harmonics are calculated. In case, the RPM is not changing only channels from Time FFT setup can be calculated according to the maximum time limit setting.

Time FFT Setup

The order tracking module creates a waterfall plot out of the RPM change. So every time the RPM changes for the defined delta RPM, an FFT is calculated for that data block and shown in the Time FFT diagram.

  • FFT waterfall vs. RPM - monitors calculated FFT
  • Time domain harmonics - complex output channel showing the amplitude of harmonics in a time domain

Campbell Diagram

Visualisation of 3-dimensional values on a single plane, mostly used in Order Tracking. The range of values is segmented in a defined number of levels and each level is represented by a circle, whose radius and color depends on level's index; bigger values are represented with larger circles and colors higher on the color map. For a better analysis of data, cutoff of lower levels can be applied.

Data Averaging and Update Criteria

Based on the Delta-RPM (e.g. 50) the RPM range is split into blocks/classes (e.g. 2050, 2100, 2150, …). Depending on the situation the user can decide now if the result is placed at the center of the block or averaging should be done
between blocks (noisy situations).

Orbit Plot

Orbit graph is a visual control where you can visualize the movement of a rotating disc.

Orbit graph shows the rotational direction of the shaft. The arrow that shows the direction of rotation is displayed in the top right corner of the graph. The direction of the arrow is CCW (counterclockwise), therefore we need to choose the channels on orbit graph in the right sequence.

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