Assessment of different semi-active control strategies on the performance of off-road vehicle suspension systems
This paper deals with dynamics and control policies analysis of semi-active suspension systems for off-road vehicles. Three configurations of these vehicles; two-axle, three-axle and four-axle have been studied and their performances are compared. The application of several control policies of s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
inderscience publisher
2010
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/4300/ http://irep.iium.edu.my/4300/ http://irep.iium.edu.my/4300/ http://irep.iium.edu.my/4300/1/Assessment_of_different_semi-active_control_strategies_on_the_performance_of_off-road_vehicle_suspension_systems__zohir.pdf |
| Summary: | This paper deals with dynamics and control policies analysis of
semi-active suspension systems for off-road vehicles. Three configurations of
these vehicles; two-axle, three-axle and four-axle have been studied and their
performances are compared. The application of several control policies of
semi-active suspension system, namely skyhook; ground-hook and hybrid
controls have been analysed and compared with passive systems. The results
show that the hybrid control policy yields better comfort than a passive
suspension, without reducing the road-holding quality or increasing the
suspension displacement. The hybrid control policy is also shown to be a better
compromise between comfort, road-holding and suspension displacement than
the skyhook and ground-hook control policies. Skyhook control generally
improves sprung mass responses while at the same time increasing unsprung
mass responses. On the other hand, ground-hook control generally improves
unsprung mass responses at the expense of the sprung mass responses.
Results show an improvement in ride comfort and vehicle handling using
four-axle over three-axle and two-axle when emphasis is placed on the
response of the vehicle body acceleration, suspension and tyre deflection. |
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