Apparatus for measuring changes in radial and/or axial position of a rotor in a drive system including an EMF producing stationary conductor
AssigneeHMD Seal/Less Pumps Limited
InventorsBrian M. Patience, David A. West, Palmer H. Beam
Life of this patent
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Abstract
An apparatus for measuring change of position of a rotor in a drive system having a drive rotor and a driven rotor generally concentrically mounted with respect to the drive rotor, the drive and driven rotors being magnetically coupled together. The apparatus includes a conduction device stationarily mounted between the rotors and a device for measuring the EMF (Electro Motive Force) produced in the conduction device as the rotors rotate. The apparatus also includes a device for determining, from the measurement, the relative position of the two rotors and/or the position of one of the rotors.
Claims12
An apparatus for measuring change of position of a rotor in a drive system comprising a first rotor adapted to be driven by a drive means and a second rotor generally concentrically mounted with respect to said first rotor, said first and second rotors being magnetically coupled together, whereby said second rotor is driven by said first rotor, said apparatus comprising:
- a conduction means stationarily mounted between said rotors for producing emf (electro motive force) as said rotors rotate,
- means for measuring the emf produced in said conduction means as said rotors rotate, and
- means for determining, from said measurement, the relative position of the two rotors and/or the position of one of the rotors.
Dependencies are inferred from the claim text.