Active Magnetic Bearing

This paper presents the modeling and control of a Novel Structure of the four Degrees of Freedom (4DOF) Hybrid Magnetic Bearings (HBMs) with a rigid rotor. In which, the centralized PD control is applied to control the HBM at its center coordinates.

8p vijeff 01-12-2023 6 3   Download

Magnetic bearing systems have received much attention in the research community for the past decades. Its inherent nonlinearity and open-loop instability present challenges for controller design. This thesis investigates and designs model predictive control (MPC) systems for an experimental Active Magnetic Bearing (AMB) laboratory system. A host-target development environment of real-time control system with hardware in the loop (HIL) is used for implementation of the predictive control systems. In this thesis, both continuous and discrete time model predictive controllers are studied.

172p runthenight05 01-03-2023 4 2   Download

The new complexes (1–3) were characterized by elemental analysis and spectroscopic methods and the molecular structure of 1a was determined by X-ray diffraction studies. These complexes were applied in the Suzuki–Miyaura cross-coupling reaction of phenylboronic acid with aryl halides in neat water. The activities of catalysts were monitored by gas chromatography–flame ionization detector and nuclear magnetic resonance.

10p langthannam 29-12-2021 12 0   Download

This paper presents an algorithm for designing a robust and optimal controller for active magnetic bearing systems. The active magnetic bearing systems are widely applied for high speed machining due to no contact operation, low fiction, lubrication-free operation, and extended life. However, they are nonlinear, unstable, multiple input and multiple output systems.

7p chauchaungayxua11 23-03-2021 11 2   Download

A series of Schiff bases (3.a–f) bearing benzimidazole moiety was successfully synthesized in ethanol by refuxing Oct2-ynoic acid (1,3-dihydrobenzimidazole-2-ylidene)amide with substituted amines. Fourier transform infrared (FTIR), ultra violet light (UV–VIS), elemental analysis, proton (1 H) and carbon (13C) nuclear magnetic resonance spectroscopy were used to characterize the newly synthesized Schiff bases.

11p vijiraiya2711 27-05-2020 13 1   Download

In an active magnetic bearing (AMB) system, the rotor always rotates at extremely high speed which always accompany with huge vibrations and noises. Most of the former researches associated with reducing the rotor vibrations are mainly focused on the control methods of AMB.

8p vivalletta2711 11-01-2020 13 2   Download

This paper presents the structure, operating principle and control system for the slotless selfbearing motor. In which, the stator has no iron core and only includes a six-phase coil, and the rotor consists of a permanent magnet and an enclosed iron yoke.

7p viminotaur2711 29-10-2019 15 0   Download

The systems for controlling the position of AMB’s rotor in the FESS are designed based on the emerging approaches of an adaptive neuro-fuzzy inference system (ANFIS). The results of AMB’s rotor position in the FESS indicated that the system responds with satisfactory control performance to reduce overshoot, a zero-error steady-state, and short rise time.

8p thithizone 16-07-2019 13 1   Download

An optimal state feedback controller is then designed in order to directly formulate the performance objectives of the control system and provides the best possible control system for a given set of performance objectives. Zero steady-state error of system outputs is also given by the means of integrators which are added into the system. As a result, MIMO system’s responses achieve quick stabilization and good performances.

6p blackwidow123 15-06-2018 41 1   Download