Integrator

The Integrator computed channel generates an output that is the integral of the input channel.

As long as the integrator is not reset or suppressed, each output sample is the cumulative sum of the current and all previous input samples multiplied by the scale factor and added to the initial value.

A logical trigger channel can reset the integrator or suppress integration. The integrator can also reset when exceeding a user-defined value.

ClosedGeneric parameters

  • Name: Enter a name for the channel. The name must be unique and contain valid characters (invalid characters are single and double quotes, '\', '@', '#', '&', '<' and '>'). Invalid channel names are 'true' and 'false' (case sensitive).
  • Collect: Select the Collect checkbox to write the channel data to the SIE data file during a test run.
  • Description: Enter an optional detailed description of the computed channel.
  • Input channel with sample rate: Set the desired input channel. In the edit dialog, the channel sample rate is displayed in S/s.
  • Measurand: Enter the quantity being measured or the type of measurement associated with the computed channel.
  • Units: Enter the physical units of measurement for the computed channel.
  • Range min and Range max: Enter the expected extreme values of the computed channel output.
  • Integration parameters
    • Initial value: Enter the initial value for the integration.
    • Scale factor: Enter the scale factor for the integration.
  • Trigger reset options
    • Integrate only when true: If selected, the integration is suppressed when the specified Channel is FALSE.
    • Enable triggered reset: If selected, the integration resets to the initial value when the specified Channel meets the Reset mode condition.
    • Channel: Set the trigger channel used for the Integrate only when true and Enable triggered reset options. This field may not be entered until at least one of those two options is selected.
    • Reset mode: If the Enable triggered reset option is selected, set the condition for the trigger channel to reset the integration.
      • When true: Reset when the trigger channel is TRUE.
      • On false - true edge: Reset when the trigger channel transitions from FALSE to TRUE.
      • After true - false edge: Reset on the sample after the trigger channel transitions from TRUE to FALSE. If the Integrate only when true option is not selected, then the output sample after the TRUE to FALSE edge is the sum of the initial value and the scaled input sample.

NOTE
When using the Integrate only when true option, the Reset mode is limited to After true - false edge.

    • Reset when sum exceeds: When selected, the integration resets to the initial value when the absolute value of the integrator sum exceeds the entered value.

Web Interface

Computed channels