PS-PERMAG 2.5: The picture below shows a typical input dialog mask of a 3D analysis on the lower left side of the screenshot.. For there are only a few parameters to be defined for an analysis, the field computation can be started after a few seconds. Also the computation itself commonly needs only a few seconds on modern personal computers. The handling of PS-PERMAG is very easy and is maintained by an extensive help system, shown here by an example on the right side

PS-PERMAG 2.5: Radial field distribution of a laterally magnetized magnet around its outer circumference. Easily the sinusoidal shape of the field can be seen. Additional parameters like extreme values or path integrals are supplied by the software.

PS-PERMAG 2.5: A tabular list of computed field values is shown below. In one computational run all field components on a defined results path are evaluated by the program. Beside listing the parameters within the software, additionally the ASCII export of the computed fields is possible. So the data can be analyzed further in third party software like in spreadsheet programs.

PS-PERMAG 2.5: Beside an external analysis of the field values, which is possible by the ASCII export of the data, PS-PERMAG additionally supplies the output of several internal parameters like minimum and maximum fields, integrals or field angles. One feature being of special importance for sensor technology is the harmonic analysis (Fourier analysis) of the fields. The screenshot below shows the Fourier series approximation of the radial field of  a multipolar homogeneous cylinder magnet.

PS-PERMAG 2.5: The Fourier series expansion of field components evaluates harmonic coefficients up to the order N in case of periodic functions, where N is the number of path points per half period. In addition also non periodic distributions can be analyzed by use of Fourier integrals. Beside tabular listings additionally graphical spectra can be plotted as shown below for a cylindrical magnet with two polar radial magnetization.

PS-PERMAG 2.5: The software not only analyzes cylindrical systems with discrete rotational symmetry. It is also possible to analyze hexaeder systems (cuboids). The example below shows the z-component of the field above a bar made of bonded ferrite with 8 poles. The results path in the case below is as straight line located at 0.5mm above the surface of the magnet.

PS-PERMAG 2.5: For all sorts of magnets straight line as well as circular paths outside or inside the magnet can be defined for the purpose of field evaluation. All field components can be evaluated in cylindrical or in cartesian coordinates. The following screenshot shows the typical decrease of the radial field on a linear path in front of a diametrically magnetized cylinder..

PS-PERMAG 2.5: Multipolar hexahedrons (cuboids) as well as axially multipolar cylinders can also be treated in the neighborhood of soft magnetic plates. Beside of this in addition simple models for rotational electrical machines are supplied by PS-PERMAG. Here armature and housing are treated as soft magnetic cylinders. The alternating permanent magnets can completely cover the rotor body or can be constricted in their tangential extension by a filling factor < 1. Homogenous as well as radial magnetization of the segments is supported as well as inner and outer rotor assemblies. In contradiction to the other systems the electrical machine models are 2D only. The screenshot below shows an example for an assembly with homogenous magnetization of the segments.

PS-PERMAG 2.5: For production of sensor systems, especially for MR- or Hall- based sensors with two output signals, the knowledge of the angular distribution of magnetic fields is of relevance. Target for e.g. an angular detection system is a good linearity of the signal. The screenshot below shows the resulting field angle of a multipolar lateral magnet in the r-phi-plane with such a good linearity..

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