2D example: Magneto Static application tutorial


This paragraph is a summary of cases studied in detail in the 2D example: "Magneto Static application tutorial".

The files relating to the studied cases are available in the documentation directory of the Flux DVD.

Study carried out

The study proposed in the "Magneto Static application tutorial" is the study of a variable speed sensor used to measure the speed of a car.

Studied device

The device to be analyzed, presented in the figure below, consists of:

  • a cogged wheel (made of steel) with three teeth
  • two probes with a magnet (made of ferrite) and a coil around each

Operating principle

The rotation of the cogged wheel near the tip of the probes changes the magnetic flux, creating an analog voltage signal that can be measured by the probes.

Studied cases

Two cases are carried out with the Magneto Static application:

  • case 1: static study (mono value)
  • case 2: multi-parametric static study (multi values)

Case 1

The first case is a static study (mono value).

In this case, the study is performed in the middle position: the two probes between two teeth. The geometric parameter α, which allow us to control the angle of the wheel around Z axis, has a fixed value α = 75° The coils are not current supplied (=measuring coils)

Case 2

The second case is a multi-parametric static study (multi values)

In this parameterized study, the angle of the cogged wheel will vary. The geometric parameter α varies in the range [75°, 195°] with a step of 3°.