**1.3 Active damping**

An active control system is one in which an external source of energy to control actuator(s) that apply forces to the suspension system and the schematic diagram of typical active suspension systems arrangement are shown in Fig 2. The force actuator is able to both add and dissipate energy from the system, unlike a passive damper, which can only dissipate energy.

Fig. 2. Active suspension system's oil/air connection diagram
