Research Article

Active Hybrid Control Algorithm with Sky-Hook Damping and Lead-Lag Phase Compensation for Multi-DOFs Ultra-Low Frequency Active Vibration Isolation System

Figure 13

The simulation curves of transmissibility with different control ways: (a) the red line for passive with kg and  N/m, (b) the blue line for absolute velocity feedback (sky-hook damping) with , and (c) the green line for active (AHC: absolute velocity feedback control with   and lead-lag phase compensation feedforward control with , Hz, and Hz).