BSA Flow Software Installation and User's Guide - CSI

Stop on no. cycles The stop criterion "Stop on no. cycles" is performed on the number of
cycles. Here it is possible to specify the maximum number of cycles to
process. When the number of cycles is reached the application is requested
to stop the acquisition. In case of high cycle frequency, the acquisition might
aquire more cycles than requested before stopping.
Stop on bin count The stop criterion "Stop on bin count" stops the acquisition when a defined
number of samples are present in all bins. This criterion is used to specify
that a minimum number of samples must exist in all averaging bins before
stopping. In case of high sample rate, the acquisition might acquire more
samples per bin than requested before stopping.
Note Please note that multiple stop criteria can be made inside the same project:
sample number, elapsed time, etc. The acquisition will stop based on the
criterion met first.
6.3.5 Output from the Cyclic Phenomena Object
The Cyclic phenomena object is a processing object identified by the -
icon in the project explorer, and like all processing objects it performs
calculations, but does not itself present the results. To see the results you can
create a List-object as a child of the Cyclic phenomena object. (See Figure
6-47 to Figure 6-49)
The output information will be different whether a SYNC signal is used
(Time Based) or an Encoder with reset and encoder pulses is used (Encoder
based).
Note Please note that phase angles estimated from arrival times do not
necessarily correspond to the angular position of a rotating shaft unless this
shaft moves with constant velocity so there is absolute linearity between time
and position. In some cases, such as a rotating impeller in a turbine,
constant velocity is a reasonable assumption, but in other cases, such as the
crankshaft in a four-stroke engine, the velocity can vary significantly within
each cycle even if the duration of the cycle is constant. If knowledge of the
angular position is important and linearity cannot be assumed, you should
phase sort on the basis of encoder pulses rather than arrival time.
Time based
In Figure 6-47 and Figure 6-48 phase sorting has been done on the basis of
arrival time, using SYNC1 to mark cycle resets.
For Figure 6-47, the cycle has been divided into Time bin and for (Figure
6-48), the cycle length has been divided into angles bin (see chapter 6.3.4).
See chapter 6.3.4 for selecting binning type.
Time based information Time averaged information
6-48 BSA Flow Software: Options and Add-ons