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ON THE RETROFITTING OF PASSIVE SUSPENSIONS FOR ROAD VEHICLES
Last modified: 2017-05-18
Abstract
This work analyzes the use of an electro-mechanical device to be applied to a passive suspension system to improve performance
in terms of comfort, handling and safety [Tseng and Hrovat, 2015, Sharp, 1998]. It is well known that active suspension allow the
best performance in terms of road holding and comfort [Sharp and Peng, 2011, Tseng and Hrovat, 2015] while variable geometry
suspension (VGS), represent a good compromise between the performance of the semi-active and passive suspensions and the
disadvantages of active suspensions [Arana et al., 2015] The overall goal is to achieve a variable geometry suspension system,
of simple construction, small in size, which requires a reduced energy for its implementation, and that is installable without
substantial changes to the original passive suspension system through retrofitting operations. The device will be applied to a
vehicle whose geometries are inspired by XRAY T4 touring car platform. The kinematics of the system is analyzed by using
Lotus Suspension Analysis (LSA) software, while the multi-body model of the vehicles has been realized in SimScape. The
control law, of the retrofitted suspension system, is based on a hierarchical structure, having to guarantee, the mitigation of the
vibration of the chassis, not compromising the stability of the vehicle for the different trajectories.
in terms of comfort, handling and safety [Tseng and Hrovat, 2015, Sharp, 1998]. It is well known that active suspension allow the
best performance in terms of road holding and comfort [Sharp and Peng, 2011, Tseng and Hrovat, 2015] while variable geometry
suspension (VGS), represent a good compromise between the performance of the semi-active and passive suspensions and the
disadvantages of active suspensions [Arana et al., 2015] The overall goal is to achieve a variable geometry suspension system,
of simple construction, small in size, which requires a reduced energy for its implementation, and that is installable without
substantial changes to the original passive suspension system through retrofitting operations. The device will be applied to a
vehicle whose geometries are inspired by XRAY T4 touring car platform. The kinematics of the system is analyzed by using
Lotus Suspension Analysis (LSA) software, while the multi-body model of the vehicles has been realized in SimScape. The
control law, of the retrofitted suspension system, is based on a hierarchical structure, having to guarantee, the mitigation of the
vibration of the chassis, not compromising the stability of the vehicle for the different trajectories.