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.
Magnetic flux density at a guitar-pickup sensing point versus ferromagnetic-string position, showing how string vibration modulates the pickup flux.
How to find guitar pickup flux variation?
Answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Sweep the steel-string Y-position with LabelMover and calculate magnetic flux density at the selected point on the permanent-magnet axis.
guitar pickup sensors, magnetic string sensors, inductive audio pickups
Download
Simulation problem
Problem Type
Plane-parallel problem of DC magnetics.
Magnetized core permeability 1000, coercive force 1000 kA/m.
Steel string permeability 10000.
Find the flux density in the testing point on the permanent magnet axis as a function of the steel string Y-position.
The LabelMover tool is used to automate the calculations.
Magnetic field around the pickup sensor:
Video
Related examples