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Electromagnetic damping mechanism for force motor

  • US 4,127,889 A
  • Filed: 11/01/1976
  • Issued: 11/28/1978
  • Est. Priority Date: 10/31/1975
  • Status: Expired due to Term
First Claim
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1. A force motor comprising a movable drive frame, a drive coil and damping coil attached to said drive frame, fixed magnetic field means disposed about said drive frame, a signal current supplied to said drive coil for causing movement of said drive frame, a first static coil connected to said magnetic field means adjacent said drive coil for offsetting the magnetic flux induced in said drive coil when said drive coil is supplied with the signal current, and a second static coil connected to said magnetic field means adjacent said damping coil for offsetting the magnetic flux induced in said damping coil when said drive coil is supplied with the signal current.

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