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TECHNICAL PAPERS

Adaptive Continuously Variable Compression Braking Control for Heavy-Duty Vehicles

[+] Author and Article Information
Maria Druzhinina, Anna Stefanopoulou

Mechanical Engineering Department, University of Michigan, Ann Arbor, MI 48197

Lasse Moklegaard

Mechanical and Environmental Engineering Department, University of California, Santa Barbara, CA 93106

J. Dyn. Sys., Meas., Control 124(3), 406-414 (Jul 23, 2002) (9 pages) doi:10.1115/1.1486010 History: Received March 01, 2000; Online July 23, 2002
Copyright © 2002 by ASME
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References

Figures

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Lift profiles for exhaust, intake and brake events
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The instantaneous shaft torque response to a step change in BVT from 685 deg to 692 deg. The third plot shows the event-averaged torque response. Source: 10.
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Upper plot: engine speed ω (solid) in response to desired speed ωd (dash-dot) and reference model trajectory ωm (dash). Lower plots: the trajectories of torque Tcb and brake valve timing ucb (solid). ucb,max,ucb,min are indicated by dash-dotted lines.
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Convergence of vehicle mass and road grade parameter estimates. The true values are given by the dash-dotted lines, the estimates by the solid lines.
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Upper plot: engine speed ω (solid) in response to desired speed ωd,f (dash-dot) and reference model trajectory ωm (dash). Lower plot: the trajectories of brake valve timing ucb (solid). ucb,max,ucb,min are indicated by dash-dotted lines.
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Upper plot: engine speed ω (solid) in response to desired speed ωd (dash-dot) and reference model trajectory ωm (dash). Second plot: the trajectories of instantaneous, averaged and estimated shaft torque Tcb. Lower plot: brake valve timing trajectory.
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The convergence of vehicle mass and road grade parameter estimates. The true values are given by the dashed lines, the estimates by the solid lines.
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Upper plot: engine speed ω in response to desired speed ωd and reference model trajectory ωm. Second plot: the trajectories of instantaneous and averaged shaft torque Tcb. Lower plot: averaged torque (solid) and estimated torque T⁁cb (dash).

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