Magnetic pickup sensor - QuickField simulation example
This simulation example is prepared by Dieter Stotz as a part of the webinar Basic analysis of magnetic pickup evaluated with QuickField.
Permanent magnet produces a magnetic flux, and the oscillating ferromagnetic a string affects the flux distribution. Flux variation could be detected by the coil. We do not include the coil in the model and calculate the flux directly in QuickField.
How to find focused guitar pickup flux variation?
Engineering answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Set up a plane-parallel QuickField DC Magnetics problem for a focused guitar pickup and evaluate flux variation from computed field results.
guitar pickup sensors, focused magnetic pickups, inductive audio pickups
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Simulation problem
Problem Type
Plane-parallel problem of DC magnetics.
Permanent magnet permeability 1000, coercive force 1000 kA/m.
Core, steel string permeability 10000.
Find flux in the core cross-section as a function of the string Y-position.
The LabelMover tool is used to automate the calculations.
Magnetic field around the pickup sensor:
Video
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