Koseki, Yoshinori,

• We found that the cost function I used was (X_LVDT + alpha*X_SEIS) not appropriate, and it seemed that it would be better to minimuize the following function:
  • func = ( X_LVDT + alpha*X_SEIS - X_GEO )
• With the test, we obtained the following sensor correciton gain:

• dof	correctiob gain apha
  IPL	-1.04
  IPT	-0.935

• The attachement format is:
  • LVDT: displacement signal between ground and IP
  • SEIS: seismometer signal on the ground in dispacement
  • GEO: veocity sensor signal of IP, converted to displacement
  • residual = [ (LVDT + alpha*SEIS) - GEO ]
• performance confirmation will be done.
• Other reported follows.
• ref: /users/VIS/TypeA/ETMX/feedforwrding/gain_adjustment/test/