In the metal-amplified density assay (MADA), all the beads levitated at the same height in the developing buffer initially regardless of the concentration of gold-labeled protein that the beads were exposed to, suggesting that MagLev, at least in the form we implemented, was not able to detect the binding of gold nanoparticles onto the surface of the beads. The beads however, changed levitation...

The influence of the pressure on magnetic and superconducting properties polycrystalline MgB2 bulks was studied. Bulk samples were prepared using conventional in-situ solid state reaction hot-pressing methods. structural electromagnetic studied by x-ray diffraction (XRD), scanning electronic microscope (SEM), hysteresis (M-H) levitation force (Fz, Fx) measurements. XRD measurements proved high ...

An algorithm for the estimation of the electric resistance for self-sensing magnetic levitation systems is presented. The development of this novel estimation algorithm is based on the position estimator proposed in Glück et al. (2010). Based on the mathematical model of the considered magnetic levitation system, the main ideas of the position estimation algorithm are summarized. A detailed ana...

Levitation induction heating represents the first step of levitation melting, which is an advanced technology used for processing of superclean metals or metal alloys. A workpiece is lifted by the Lorentz forces in time variable magnetic field produced by a system of suitably placed field coils and then heated by the Joule losses. The paper deals with optimization of the heating process from th...

Air levitation is the process by which an object is lifted without mechanical support in a stable position, by providing an upward force that counteracts the gravitational force exerted on the object. This work presents a low-cost lab implementation of an air levitation system, based on open solutions. The rapid dynamics makes it especially suitable for a control remote lab. Due to the system's...

This paper investigates the dynamic model of a nonlinear magnetic levitation system and its precise control using robust control technique. In this study, a magnetic levitation system model is first identified using piecewise linearization technique and numerical computation. Then a robust controller which could stand up to 50% displacement around the operating area is designed and investigated...

This paper deals with the use of a magnetic levitation system as a part of a multi-stage seismic attenuator for gravitational wave interferometric antennas. The proposed configuration uses permanent magnets in attraction to balance the suspended weight, plus a closed loop position control to obtain a stable levitation. The system is analyzed using a MATLAB simulation code to compute the forces ...

This contribution proposes a methodology for robust control of unstable systems. For this purpose the algebraic approach using polynomials is utilized together with tuning some of the closed loop poles using loop sensitivity functions. The control design method is illustrated on the stabilization task of the magnetic levitation system. Complete procedure from derivation of a linearized model to...