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The paper provides the comparative calculations (of the filed and circuit parameters) for the system incorporating a cylindrical coil with twosectioned foil windings and three systems of permanent magnets moving inside the coil. The results are utilised to find the current density field, time patterns of voltage, current and instantaneous power under the load applied to the generator by the RL terminal element, for variable distance between the magnets' systems. Source


Calculations were performed to find the field parameters of a new-design MR damper operated in the squeeze mode: distribution of magnetic field density in the damper, the relationship between the axial component of induction and the gap radius and the relationship between the average value of induction modulus, and the magnetic interaction force inside the compensation unit and the gap height. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source


Sapinski B.,AGH University of Science and Technology | Krupa S.,Instytut Politechniczny
Przeglad Elektrotechniczny | Year: 2014

The study summarises the quasi-static analysis of the damping force generated by a vibration isolator with magnetorheological (MR) fluid in the squeeze mode. The isolator’s structure is described and the model of a simple squeeze-film device is outlined. Force characteristics of the isolator were obtained, plotting, the time patterns of the force and its components determined under sine piston displacements and constant levels of input current in the control coil, as well as force-displacement and force-velocity loops. © 2014, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source


Sapinski B.,AGH University of Science and Technology | Krupa S.,Instytut Politechniczny | Matras A.,AGH University of Science and Technology
Przeglad Elektrotechniczny | Year: 2014

The paper presents results of numerical calculations of eddy current losses and cogging force in the MR vibration-isolator prototype. The calculations were conducted by the program Opera 2-d. © 2014, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source


Sapinski B.,AGH University of Science and Technology | Krupa S.,Instytut Politechniczny | Matras A.,AGH University of Science and Technology
Przeglad Elektrotechniczny | Year: 2015

The paper summarises the results of numerical simulations of a control circuit for an MR damper operated in squeeze mode. The influence of the control gap height and current level on magnetic flux linkage was established. Assuming the piston motion to be harmonic, the current in the control circuit was computed under the constant-voltage supply conditions and for the specified gap heights. Damper force vs gap height plots obtained for the specified current levels are provided as an example of damper characteristics. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source

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