6533b7d2fe1ef96bd125f7b7
RESEARCH PRODUCT
Modeling of an active torsion bar automotive suspension for ride comfort and energy analysis in standard road profiles
Rafael TavaresMiguel DhaensMonzer Al SakkaJoan Vazquez MolinaMichael Rudermansubject
0209 industrial biotechnologyChassisComputer science020208 electrical & electronic engineering02 engineering and technologyActive suspension7. Clean energyDC motorTorsion springAutomotive engineeringVehicle dynamicsSkyhookVDP::Teknologi: 500020901 industrial engineering & automationControl and Systems EngineeringControl theory11. Sustainability0202 electrical engineering electronic engineering information engineeringActuatorSuspension (vehicle)Excitationdescription
Abstract Chassis technology is evolving towards active suspension, in which actuators can provide forces to each wheel individually. This overcomes the traditional trade-off between comfort and handling, at the expense of increased complexity and electric consumption. To reduce power demand, regenerative solutions capable of harvesting a certain amount of energy otherwise dissipated in vehicle suspensions and to enhance vehicle dynamics for improving ride comfort and road safety at the same time have been researched. In this paper, an active suspension based on a torsion bar is modeled and analyzed under the excitation from standardized road profiles according to the ISO 8608 norm. A skyhook controller was implemented in a quarter-car model for assessment of the ride comfort, power consumption and harvesting potential of a DC motor according to the four-quadrant operation, working as a generator. From simulations, results show that for a velocity of 50 km/h it is possible to harvest 50-60 W from a vehicle driving in a class C road with ride comfort trade-off. This constitutes around 25% of the power consumption of the active suspension system.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |