Experimental assessment of a linear actuator driven by magnetorheological clutches for automotive active suspensions

Chain Dynamics in Magnetorheological Suspensions

Magnetorheo]ogical (MR) fluids are colloidal suspensions of pammagnetic particles in a non-magnetic fluid. These fluids, along with their electrical analogues, electrorheologica] (ER) fluids, have been proposed as controllable fluids, for use in electromechanical devices such as dampers, clutches and brakes. [1] When exposed to an external magnetic field, the particles acquire dipole moments ag...

Switched H∞ Control Strategy of Automotive Active Suspensions

The three main performance metrics in automotive suspensions are passenger comfort, suspension deflection, and road holding ability. It is well-known that these three objectives can not be reached at the same time. In order to reach them “individually”, three linear H∞ controllers are designed. At each moment, the desired performance requirement is chosen with a robust stable control strategy t...

Stabilization of magnetorheological suspensions by polyacrylic acid polymers.

This work is devoted to the synthesis and stabilization of magnetorheological suspensions constituted by monodisperse micrometer-sized magnetite spheres in aqueous media. The electrical double-layer characteristics of the solid/liquid interface were studied in the absence and presence of adsorbed layers of high molecular weight polyacrylic acids (PAA; Carbopol). Since the Carbopol-covered parti...

Experimental Evaluation of Semiactive Magnetorheological Primary Suspensions for Heavy Truck Applications

Nonlinear Large Deformation Analysis of Rubber Bumpers in Automotive Suspensions

In this article, rubber bumpers of Double - Wishbone suspension system have been modeled and analyzed. The objective of the present work is to predict the performance of these products during deformation, represent an optimum method to design, obtain stiffness characteristic curves and utilize the results in the automotive suspension dynamic analysis. These parts are nonlinear and exhibit large...