How to build a Permanent Magnetic Shielding device applied to a workable motor

[NormanEB]

One of the problems with PM machines is "closer stronger, further weaker". The shield itself works but affects the maximum output of the machine embodiment.  I have used a piece of metal sliding over magnets to change their magnetic forces of attraction or repulsion. But that sliding requires a good bit of distance and the work=force x distance results in OU but very little percentage. The sliding I call the "set/reset" work in to make the work out.

Norman

[NormanEB]

Attached is an example of sliding metal over magnet gaps to easily move or remove the magnetic field . Butch Lafonte showed these ideas in a balanced setup but never measured anything. So you can see we can increase/decrease the magnetic flux thus creating work out.

Norman