Method and apparatus to control an armature rotating within a magnetic circuit

An apparatus comprising:

• an outer input housing cover having an opening;
• a rotatable input control shaft having mounted thereon a radial field control, the radial field control having no permanent magnets;
• an input bearing, the input bearing mounted into the outer input housing cover opening and onto the rotatable input control shaft;
• an outer output housing cover having an opening;
• a rotatable output shaft;
• an output bearing, the output bearing mounted into the outer output housing cover opening and onto the rotatable output shaft;
• a radial field control coupled to the rotatable input control shaft, the radial field control having laminations;
• a non-electromagnetic armature coupled to the rotatable output shaft, the non-electromagnetic armature having permanent magnets and an opening concentric about the non-electromagnetic armature axis of rotation;
• a non-electromagnetic stator, the non-electromagnetic stator positioned proximate to the non-electromagnetic armature;
• the radial field control positioned within the non-electromagnetic armature opening;
• and the rotatable output shaft to rotate in response to a rotation of the rotatable input control shaft.

A method comprising:

• positioning a rotatable radial field control between a north magnetic pole of a first permanent magnet on a rotatable armature and a south magnetic pole of a second permanent magnet on the rotatable armature;
• positioning the rotatable armature within a non-electromagnetic stator where a south magnetic pole of the first permanent magnet on the rotatable armature and a north magnetic pole of the second permanent magnet on the armature are proximate to the non-electromagnetic stator;
• wherein the radial field control has no permanent magnets;
• and
• wherein the rotatable armature rotates in response to a rotation of the rotatable radial field control.