This thesis presents the development and validation of an innovative Multi-Objective Control Strategy for an Active Suspension System (ASS). The primary objective is to enhance the passengers' comfort by suppressing the vibrations caused by road irregularities and transmitted to the vehicle's body, while providing a real-time estimation of the effects on the unsprung mass of the disturbance acting on the system both in terms of actual value ($d_u$) and its rate of change ($\dot{d}_u$). The second objective is to minimise the loss of road-holding due to disturbances from active suspension activity or significant road disturbances. The two objectives must be satisfied while maintaining system stability and avoiding actuator damage.