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Difference between revisions of "NVGate Torsional"
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This option transforms each external Synch input in afrequency to RPM converter (allows handling up to 6 torsional/acyclic inputs at a time). This integrated converter benefits of the high accuracy of the 3-Series analyzers Ext. synch inputs (over sampled up to 6.4 MHz). As a matter of fact the sampling of such pulse rate must bevery accurate in order to avoid speed jitter on the result. | This option transforms each external Synch input in afrequency to RPM converter (allows handling up to 6 torsional/acyclic inputs at a time). This integrated converter benefits of the high accuracy of the 3-Series analyzers Ext. synch inputs (over sampled up to 6.4 MHz). As a matter of fact the sampling of such pulse rate must bevery accurate in order to avoid speed jitter on the result. | ||
The instantaneous signals are available for numerous analyses. The main ones are:<br> | The instantaneous signals are available for numerous analyses. The main ones are:<br> | ||
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· The torsional behavior of a shaft ([https://en.wikipedia.org/wiki/Torsional_vibration#Crankshaft_torsional_vibration crankshaft], alternator) or a driving belt (service belt) being excited by its acyclic motion. In such a case the phenomena are analyzed order by order using the cross-phase tracking capabilities of the SOA Plug-in. In this case 2 or more torsional inputs are used: in different location of the shaft or on each pulley driven by the belt.<br> | · The torsional behavior of a shaft ([https://en.wikipedia.org/wiki/Torsional_vibration#Crankshaft_torsional_vibration crankshaft], alternator) or a driving belt (service belt) being excited by its acyclic motion. In such a case the phenomena are analyzed order by order using the cross-phase tracking capabilities of the SOA Plug-in. In this case 2 or more torsional inputs are used: in different location of the shaft or on each pulley driven by the belt.<br> | ||
==Analyses== | |||
===Ext synch Input : | |||
The ext. synch input can be used as a:<br> | |||
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* '''Pulse / rev''': the number of pulses per revolution. The user can enter an integer value between 1 and 4092. For a non-integer number of pulses per revolution the user must use a virtual tach. | * '''Pulse / rev''': the number of pulses per revolution. The user can enter an integer value between 1 and 4092. For a non-integer number of pulses per revolution the user must use a virtual tach. | ||
· At least the filter which let you integrate or differentiate the RPM speed to getrespectively plane angle deviations and angular accelerations for the analyses. | |||
====On-line==== | |||
In the on-line mode the torsional inputs appear as additional in the channels connection dialog box. They are identified as Tors. x from the Signal Op. resource (not visible in the ASB). These signals can be dispatched exactly as the standard inputs ones; recorded, analyzed and monitored with the TDA plug-in. | |||
The torsional inputs may be recorded as it or the source pulses can be recorded also. | |||
===Post-processing=== | ===Post-processing=== | ||