Master Thesis - OUFTI-1

The global FRF of the OBC 2 card is presented in Figure 4.17.
Figure 4.17: Global FRF of the OBC 2 card
Now that everything was dened, the dierent simplication methods can be applied
to the OBC 2 card and compared to experimental results. This comparison will be realized
using the two indicators introduced in section 4.2.4, namely the frequency deviation and
the MAC.
4.3.4 Application of the simple method
The rst method to be applied is the simple method. So, all the components eects are
completely neglected and only the PCB remains. These properties being already dened,
the results can be directly computed. They are presented in Table 4.3 and in Figure 4.18.
Corresponding modes Frequency deviations (%)
1 1.01
2 11.37
Table 4.3: Frequency deviations between corresponding modes using the simple method
91