Performance of a Semi-Active Damper for Heavy Vehicles

[+] Author and Article Information
K. J. Kitching, D. Cebon

Cambridge University, Engineering Department, Trumpington Street, Cambridge, CB2 1PZ, United Kingdom

D. J. Cole

Nottingham University, Mechanical Engineering Department, University Park, Nottingham, NG7 2RD, United Kingdom

J. Dyn. Sys., Meas., Control 122(3), 498-506 (Jul 01, 1998) (9 pages) doi:10.1115/1.1286431 History: Received July 01, 1998
Copyright © 2000 by ASME
Topics: Force , Dampers , Valves , Vehicles , Damping
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Hydraulic circuit of the semi-active damper
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Cross-section view of the semi-active damper (reservoir, filter and check valve Cv1 not shown)
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Simplified feedback control of the damper valve
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Schematic of the damper model
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Closed-loop valve spool time responses: damper velocity constant at 150 mm/s
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Influence of oil flow forces upon valve position control: closed-loop valve control with a 6 Hz sinusoidal damper velocity
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10 kN transient response: damper velocity constant at 150 mm/s
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Two DOF heavy vehicle model used in the HiL simulations
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MSD operating envelope of the semi-active suspension for a minor road, measured on the HiL rig
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Comparison between the passive and semi-active suspensions for a principal road, measured with the HiL rig
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Force and valve tracking performance for a principal road [S2msd20:Cm=44 kNs/m]
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PSDs of the passive P2opt20 and the semi-active S2msd20 suspensions for a principal road input
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10 mm bump response with a vehicle speed of 14 m/s
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Power distribution characteristics of the prototype semi-active damper for the bump road profile




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