Bode diagram of Simulink models

The Control and Estimation Tools Manager menu should look like Fig. 9.8. As ean be seen, the input point is the feed flow and the output point the concentration from the mass balance. On this display, now select Linearize Model , this will produce the Bode diagram for the linearized reactor model as shown in Fig. 9.9. 

It can be seen that the phase shift approaches -90 degrees for high frequencies, i.e. this indicates first-order behavior. The process gain that was found for low frequencies was equal to 6.69 X 10 which corresponds to 20 logio(6.69 x 10 ) = 96.5 db, which is also the value in shown in Fig. 9.9. 

1 linearization lyOs by right clicking on the desired line in your Simulink model. 

Actiye Block Name Output Port Configuration Open Loop 

II Linearize Model W Plot linear analysis result in a 

---