Application of active DVA

Consider a SDOF system (undamped, mass m₁) subjected to base excitation.

Figure 19.3: SDOF subjected to base excitation

The equation of motion may be written as

(19.9)

Transforming into frequency domain this becomes

Therefore,

(19.10)

Plugging the output of the Active DVA into the system and using Equation 19.8, we get the new displacement of m₁ as

(19.11)