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Method for driving vibrating motor

  • US 9,774,289 B2
  • Filed: 03/27/2016
  • Issued: 09/26/2017
  • Est. Priority Date: 07/20/2015
  • Status: Active Grant
First Claim
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1. A method for driving a vibrating motor, comprising the following steps:

  • providing a driving signal with an adjustable signal period to a vibrating motor, the vibrating motor including a vibrating unit performing linear vibration, the vibration direction of the linear vibration having a positive moving direction and a negative moving direction contrary to the positive moving direction, the driving signal comprising a positive driving signal for generating a positive driving force to the vibrating unit along the positive moving direction and a negative driving signal for generating a positive driving force to the vibrating unit along the negative moving direction;

    detecting a vibration direction of the vibrating unit of the vibrating motor by a detector, a first detecting signal generated when the vibrating unit is excited in the positive moving direction, a second detecting signal generated when the vibrating unit is excited in the negative moving direction;

    determining whether the driving signal facilitates vibration of the vibrating unit, if the direction of driving force corresponding to the driving signal is coincident with the vibration direction of the vibrating unit, the driving signal facilitating the vibrating unit along the moving direction, otherwise the driving signal hindering the vibration of the vibrating unit; and

    switching a polarity of the driving signal when the driving signal does not facilitate the vibration of the vibrating unit.

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