Control method of electric tool and electric tool executing same

Control method of electric tool and electric tool executing same

  • CN 101,771,379 A
  • Filed: 01/04/2009
  • Published: 07/07/2010
  • Est. Priority Date: 01/04/2009
  • Status: Active Grant
First Claim
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1. the control method of an electric tool, wherein electric tool comprises motor and the output shaft that is driven by the motor rotation, described output shaft is used to export rotation torque and drives a working head and work on a workpiece, it is characterized in that this control method comprises the steps:

  • Measure the time dependent parameter that is used for representing the output shaft load;

    Obtain second dervative or the higher derivative of described parameter to the time;

    Generate control signal corresponding according to described second dervative or higher derivative;

    AndChange the rotary speed of described electric tool according to described control signal.

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