After winding several coils by hand, I wished to eliminate the guesswork and model the coils using Finite Element Analysis with the freeware program FEMM. After talking to design engineers at Buckley Systems and Wellington Drive, I realised that they are striving for focused flux lines with the absolute minimum of stray magnetic flux, which is the opposite of what I am trying to achieve.  The a[...]

CLIENT:                     Unitec PROJECT DATE:       2011-2013   This is a component of my current Masters project.  The project seeks to remove dennotative symbol based communication with an abstract interface that uses movement to convey interface logic. The magnetic grid is made of PWM controlled electromagnets arrayed in a hexagonal structure.  These coils are located under [...]