Three Basic Control Structures for AVC

AVC is implemented broadly using either of the three control systems–

  Single input-single output (SISO) vibration controller,

  State-space based multiple input and multiple output (MIMO) controller and

  distributed vibration control.

SISO Control

Figure 22.6: SISO control

A typical Classical Control System where G(s) represents the transfer function of a single degree of freedom vibrating system, H(s) the transfer function of a sensor and G_c(s) the transfer function of the controller + actuator. This type of system works well when the vibrating system could be represented as several decoupled SDOF vibrating system.