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HAPTIC ACTUATOR INCORPORATING ELECTROPERMANENT MAGNET

  • US 20180096570A1
  • Filed: 10/04/2016
  • Published: 04/05/2018
  • Est. Priority Date: 10/04/2016
  • Status: Active Grant
First Claim
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1. A haptic actuator comprising:

  • an electropermanent magnet having a deactivated state and an activated state for a net magnetic field thereof, wherein the electropermanent magnet comprises,a first magnet having magnetic poles that are selectively switchable between a first polarity and a second polarity opposite the first polarity,a second magnet adjacent to the first magnet and having its magnetic poles fixed at the first polarity, anda device adjacent to the first magnet and configured to switch a polarity of the magnetic poles of the first magnet between the first polarity and the second polarity; and

    a layer of ferromagnetic material or magneto-active polymer located opposite an end of the electropermanent magnet, and configured to generate a haptic effect by being actuated toward the end of the electropermanent magnet in response to the net magnetic field of the electropermanent magnet being in the activated state.

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