This report presents a quarter-vehicle test rig for an active suspension system that has been designed to study the nonlinear dynamic behavior of suspension systems and to experimentally validate controllers for active suspension systems. A quadricycle suspension system is integrated in the test rig in order to reduce the test rig’s mass and to facilitate the realization of a high bandwidth active suspension system. The active suspension is realized by an electrical linear motor which is incorporated in parallel to the passive suspension strut. In the first part of this report, the test rig concept is presented including the actuator and sensor configuration. In the second part, the identification of the test rigs’ dynamic behavior is presented and a nonlinear as well as a linear test rig model are derived and validated.      «

This report presents a quarter-vehicle test rig for an active suspension system that has been designed to study the nonlinear dynamic behavior of suspension systems and to experimentally validate controllers for active suspension systems. A quadricycle suspension system is integrated in the test rig in order to reduce the test rig’s mass and to facilitate the realization of a high bandwidth active suspension system. The active suspension is realized by an electrical linear motor which is incorpo...     »