Finite-element computation of nonlinear magnetic diffusion and its effects when coupled to electrical, mechanical, and hydraulic systems
| Title | Finite-element computation of nonlinear magnetic diffusion and its effects when coupled to electrical, mechanical, and hydraulic systems |
| Publication Type | Journal Articles |
| Year of Publication | 2004 |
| Authors | Brauer JR, Mayergoyz ID |
| Journal | Magnetics, IEEE Transactions on |
| Volume | 40 |
| Issue | 2 |
| Pagination | 537 - 540 |
| Date Published | 2004/03// |
| ISBN Number | 0018-9464 |
| Keywords | actuator;, actuators;, analysis;, axisymmetric, B-H, coupled, currents;, curves;, cylinders;, diffusion, diffusion;, eddy, electrical, electrohydraulic, electrohydraulics;, electromagnetic, element, equivalent, finite, finite-element, flux;, hydraulic, magnetic, mechanical, methods;, nonlinear, resistor;, responses;, steel, system;, systems;, times;, transducers; |
| Abstract | Finite elements are used to compute eddy currents and magnetic diffusion times in steel cylinders with nonlinear B–H curves. Computations are made of diffusion times versus current in a typical axisymmetric magnetic actuator, showing good agreement with recently published approximate analytical formulas. The computed nonlinear diffusion times are then used to derive an equivalent resistor that is used in a model of an electrohydraulic system. The diffusion time causes delays in the coupled mechanical and hydraulic responses. |
| DOI | 10.1109/TMAG.2004.824591 |