Results 261 to 270 of about 427,344 (311)

Stability of active suspensions

Physical Review E, 2010
We study theoretically the stability of "active suspensions," modeled here as a Stokesian fluid in which are suspended motile particles. The basis of our study is a kinetic model recently posed by Saintillan and Shelley [D. Saintillan and M. J. Shelley, Phys. Rev. Lett. 100, 178103 (2008); D. Saintillan and M. J. Shelley, Phys. Fluids 20, 123304 (2008)]
Christel, Hohenegger, Michael J, Shelley
openaire   +2 more sources

Nonlinear active suspension with preview

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
Optimal control with preview is investigated for a quarter-car, two-degree-of-freedom vehicle model, with a quadratic and quartic cost function. By solving a set of Euler-Lagrange equations, an optimization algorithm is derived to find the optimal control assuming complete knowledge of the disturbance (infinite time preview). The results give us merely
Niklas Karlsson   +2 more
openaire   +1 more source

A suboptimal nonlinear active suspension

Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000
A nonlinear optimal control law based on a quartic cost function is developed, and applied to a quarter-car vehicle model. For small disturbances, the performance is similar to the "soft" linear suspension, but for large disturbances, the suspension travel and wheel hop are reduced at the expense of larger body acceleration.
Niklas Karlsson   +3 more
openaire   +1 more source

Active Suspension

SAE Technical Paper Series, 1988
<div class="htmlview paragraph">This paper defines an active suspension and gives a brief history of the development of the LOTUS system, the only successful fully-active embodiment to date. The modal approach and overall system are described. The performance and potential of active suspension relative to the conventional suspension is discussed.
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The activity of ions in suspensions. I. On the activity of several cations in dusarite suspensions

Recueil des Travaux Chimiques des Pays-Bas, 1946
AbstractThe activity of the ions was measured in a number of dusarite suspensions containing varying quantities of adsorbed K, Mg and Ca. It was found to be very small in dense suspensions. With equal occupation of the adsorbent the average relation between the activities of K, Mg and Ca is as 25: 2.3: 1.
A. C. Schuffelen, T. Barendregt
openaire   +1 more source

Cosimulation of Active Suspension

SAE Technical Paper Series, 2005
<div class="htmlview paragraph">The purpose of this study is to determine the feasibility of simulating an active suspension using cosimulation. The vehicle used is a utility truck created in ADAMS/View while the E.C.U. (electronic control unit) is implemented in Simulink for both a fully-active and semi-active controller.
Joseph Maiorana   +3 more
openaire   +1 more source

ACTIVE SUSPENSIONS CLASSICAL OR OPTIMAL?

Vehicle System Dynamics, 1985
SUMMARY The paper describes four control configurations designed for an electromagnetic vertical active suspension fitted to a BR Mk III coach. Two of the control systems were designed using classical frequency response techniques and two using linear optimal control theory.
openaire   +1 more source

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