Development of a Vibration Pattern on a Linear Oscillatory Actuator for Cellular Phones

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  • 携帯電話用リニア振動アクチュエータの振動パターン
  • ケイタイ デンワヨウ リニア シンドウ アクチュエータ ノ シンドウ パターン

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Abstract

Small, thin electric powered cellular phones are gaining remarkable popularity. The most recent cellular phones have a vibration function generated by a rotary vibration motor to notify the user of the arrival of a message.<BR>We developed a small electrically powered linear oscillatory actuator (LOA), and investigated how it can be used to provide a new dimension to the vibration function. While it is difficult to add variety to the vibration function of a conventional rotary motor, it is easy to do so to that of an LOA.<BR>A rotary motor can only be switched on and off, and it has a constant frequency and vibration. With an LOA, however, it is possible to adjust the intensity of the vibration by controlling the frequency. Therefore, it is possible to use various vibration patterns.<BR>The effect of the magnetic coercive force on the magnetic spring constant was also examined.

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