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Linear actuator comprising a brushless polyphase electric motor

  • US 20050218727A1
  • Filed: 03/04/2003
  • Published: 10/06/2005
  • Est. Priority Date: 03/05/2002
  • Status: Active Grant
First Claim
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1. Linear actuator comprising a brushless multiphase synchronous electric motor having a stator and a rotor acting on a control organ through a driving means for converting, over several revolutions, rotational movement into a linear displacement;

  • a springy and/or magnetic restoring means for systematically restoring the control organ into a reference position in the event of interruption of the power supply to the motor;

    a position-detection device of the motor contributing, in combination with an electronic control unit, to the control or the adjustment of the position of the rotor and the control organ; and

    an independent reversible reduction device associated with the driving means.

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