Class impact fastening tool rotation speed control method

The present invention discloses an impact fastening tool speed based control method, comprising: pre-setting and dynamic control of two parts, a pre-set including the following: setting a plurality of operating range, and sets a larger duty ratio of the PWM signal as the driving signal after a time period of energization, the motor can be rotated at a greater speed, improve efficiency, according to the main controller determines that the feedback means into the strike stage torque control is required when reducing the rotational speed, the main controller again corresponding user currently set operating range of the lower duty cycle of the PWM signal to adjust the drive motor, the control method of the present invention can improve the efficiency of better efficiency, to meet the user wishes to drive demand for higher speeds in the initial work fixing member; in the torque phase control, the method of the present invention automatically using a suitable torque to drive the nail fixing member, in order to better achieve the requirements of users, so that users get a good experience.