Actuator Control for a Hybrid Suspension System

This report presents actuator control concepts for a new structure of a mechatronic suspension system entitled hybrid suspension, which includes a combination of a semi-active damper and a low bandwidth actuator integrated in series to the primary spring and can potentially achieve a performance similar to a fully active suspension system. An overview on the design and constructive realization of the hybrid suspension based on actuator components from production vehicles is given. Models and control approaches for the two integrated actuators are derived and the integration of the hybrid suspension in a quarter-car test rig is presented.