Monthly Report for Space Robotic FMS PreCommercialization Development Jun 30, 2018
studying drive segment combinations for optimium excitation of modes which will identify particular forcing degrees of freedom.
AnalysisContinuing work on correlating FE predictions with test data sets and accelerometer pairs to identify mode shapes. Particular attention is being paid to torsion mode, because it is not directly excited. All other modes can be fairly excited to produce very sharp, easily defined peak. The torsion was is visible, but it would be nice to find a means of sharpening it.
Software Simulationno change
Breadboard Manufacturingno change; accelerometers on underside of loading plate.
All but one of simple segment combinations have been tested. The combination of accelerometer pair results is being used to identify segment combinations which would enhance mode shape understanding.
- axial (all 4 segments in phase)
- rocking (4 sets)
- 1/2 saddle (2 sets)
- individual segments (4: 0,1,2,3)
- Segment One only
Plans for July.
Continue linear configuration testing (low frequency range) for some combined segments. Continue writing technical paper on issue of torsion degree of freedom result.