Machine slip and direction sensing using flux gate sensor

Apparatus according to claim 16, wherein the controlled pattern may include, or take the form of, one or more of the following:

• magnet location, magnet number, magnet strength or magnet polarity.

A method comprising:

• receiving, with a signal processor, signaling from a flux sensor containing information about a residual field from an electrical supply to a motor of a driven machine and a magnetic field from one or more rotating magnets placed on a rotating component of the driven machine;
• and
• determining, with the signal processor, corresponding signaling containing information about the operation of the driven machine, based upon a difference between an electrical supply frequency and a slip frequency determined from the signaling received and processed.