Lecture 22:
Introduction to Active Vibration Control: Organization
Traditional Application of AVC
Active Vibration Control can also be used in more traditional applications like control of vibration due to excitation forces like earthquake, wind, unbalanced motors and waves.
In such applications, the control system integrated with a range of actuators like electromagnetic (EM), electro-hydraulic (EH) and pneumatic actuators (EP) are used to provide counteractive actuation forces such that the motion of the structural system could be controlled. The figure below shows a typical controller-actuator system.
Note that EM, EP or EH actuators are more preferred here due to the availability of large actuation forces.
Control of structural vibration using electromagnetic actuator
Figure 22.3: Vibration control by electromagnetic actuator
S1, S2 - Sensors S - Signal Conditioner F - Actuator
FBC - Feedback Control FFC - Feed forward Control R - Ref. Signal
SJ - Summing Junction
PA - Power Amplifier K1 - spring C1 - damper M1 - mass of the coil housing m1 - proof mass
