Control Parameters Selection As mentioned earlier, if the displacement of the electromagnet is fixed, the change of model parameters of a magnetic suspension system is mainly on the load mass M or the external force f0. They come mainly from the above part of the air spring [17]. Because ...
The yield stress and shear viscosity of the MR fluids increase by many orders of magnitude, and the suspension system changes from a Newtonian liquid to a solid-like state when a magnetic field is applied [12,13]. Their variety of applications includes magnetically-controllable devices such as ...
The use of hydrocarbon-based magnetic fluids as a dielectric medium can facilitate the use of EHD flows, so in this case it becomes possible to control the process through the additional action of a magnetic field. At the same time, we have no information about specific, already-existing ...
FF is a homogeneous colloidal suspension, and each nanoparticle must be coated to inhibit clumping. Wilson and Langell [30] observed a similar effect, where magnetite nanoparticles capped with oleylamine/oleic Nanomaterials 2019, 9, 100 10 of 19 acid were also studied by XPS. The quantitative ...
The magnetic flux density Brmax in the air gap in the axial and radial directions is set to be 1.5 T considering the magnetic saturation of the silicon steel. The suspension force is determined by the suspension control current. In addition, the maximum suspension force of the HMB in this ...
Performance-oriented controls of a novel rocker-pushrod electromagnetic active vehicle suspension. Mech. Syst. Signal Process. 2018, 109, 1–14. [CrossRef] 3. Zou, J.Y.; Guo, X.X.; Abdelkareem, M.A.A.; Xu, L.; Zhang, J. Modelling and ride analysis of a hydraulic interconnected ...
In aqueous co-precipitation process, polymer ligands can efficiently control the size and shape of the NPs due to the presence of abundant functional groups such as –COOH, –OH, –NH2, etc. These multifunctional polymers render magnetic NPs more stable, water-soluble and uniform in addition to...
The suspension was mechanically stirred and the reaction was maintained at pH 8.0 for 16 h by adding NaOH 0.1 M. Once the reaction was finished, the mixture was magnetically decanted, washed once with ethanol, then with distilled water and finally dialyzed for 3 days in a tubing cellulose ...
Secondly, the PVP-stabilized CuFe2O4/Ag nanoparticles were sonicated for 30 min under stirring, and 4 mL 1,4-dioxane-butanol (v/v = 1/1) containing TAPB (0.03 mmol) and DMTP (0.045 mmol) was added to the suspension. After that, aqueous acetic acid (12 M, 0.15 mL) was slowly ...