Tolerance Envelope Test

Tolerance Envelope Test

The actual script that is the function is located at: T:\Marine Engineering\Co-Op\Igor Tchouiko\xenvelope.m

The script I used to call the function is located at: T:\Marine Engineering\Co-Op\Igor Tchouiko\tolerance_envelope.m

This function tests if the output of the seat lays within the tolerance envelope of a given threshold.

The function is:

xenvelope( tVals, aVals, aTarget, plotFlag )

Where tVals is the time values and aVals is the acceleration values. I get this data from accel_vs_time_best.m located at T:\Marine Engineering\Co-Op\Igor Tchouiko\Original ShockAnalysis_3\ShockAnalysis SRS.

Make sure you select the OUTPUT acceleration and not the input.

aTarget is the threshold you want to test. So threshold 1 according to the Lab test requiremetns document is an acceleration of 3g. So input 3g and see if the response output falls in the threshold 1 envelope.

plotFlag is either set to 1 or 0, if its set to 1 it will plot the tolerance envelope to the accel vs time data IF it fits. If not it will simply state that it does not fit. I just leave it as 1.

Accel VS Time Data Flowchart