- 11 Sep 2012
Test of 'Bump removal' after act exclusion from ICC
yesterday we removed acts#202,211,542
we try now to sample a few modes to check if the bumps are still there
the bumps on the second set of measuremnents are disappeared (compare for instance the modes #352,353,354...)
restarted for a couples of time because of RIP induced by IDL Demo (false, because the IDLRPC was no longer responding)
FF tracknum 20120911_145806
Comparison with FF in use
FF 20120911_145806 has been compared with adsec.ff_matrix over the same actuator list
Some brain storming on the bumps
History of the bump
appeared on IM sampling 20120909_141836: visible on several modes, including mid-order ones.
the dynamic behaviour is: comparing push #0 and push#1 the bump is much more pronounced in push#0. the difference between push#j and push#j+1 is the zero of the measurement (i.e. the signal are identical)
act# 539 is removed
the bumps are observed in IM 20100910_124841. not on mode 352, but on higher order modes (e.g.504)
dynamical behaviour: the difference between push0 and push1 corresponds to the zero of the measurement
the bumps are also observed on W IM (20120909_205859). even on mode 352. this can be explained with an amplitude driven effect. in our sampling the commanded amplitude is much larger than that on W, so that a small bumb will not be seen.
on the remaining data, since now, we observe the same behaviour.
on a W IM (20120911_222158) the bump is not longer visible on mode 352 (but on mode 504)
- bump on mode 352:
- dynamical behavior of mode 352:
- IM with W 20120909. bump on mode 352:
- IM with W 20120911. bump on mode 352 is not visible: