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Method for controlling air output volume

  • US 10,184,680 B2
  • Filed: 12/16/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 04/26/2012
  • Status: Active Grant
First Claim
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1. A method for controlling a motor, the method comprising:

  • 1) inputting a target air volume Qref into a microprocessor control unit of a motor controller;

    2) starting the motor by the motor controller, and presetting a torque T;

    2a) allowing the motor to work in a steady state under the torque T;

    3) determining an air volume Qc generated by the motor by detecting and recording a rotational speed in the steady state;

    acquiring an adjustment coefficient V under the torque T through a table look-up method, and establishing a functional relation formula Q=F (T, n, V) to calculate the air volume Qc in the steady state, Q representing the air volume, T representing the torque, n representing the rotational speed, V representing the adjustment coefficient, and each torque section having a corresponding adjustment coefficient;

    4) adjusting the torque T after comparing the target air volume Qref with the air volume Qc by the microprocessor control unit of the motor controller;

    a) increasing the torque T through the motor controller when the target air volume Qref is greater than the air volume Qc, or b) decreasing the torque T through the microprocessor control unit of the motor controller when the target air volume Qref is smaller than the air volume Qc; and

    5) repeating 2a),

         3), and

         4) until the air volume Qc is equal or equivalent to the target air volume Qref, maintaining the torque, allowing the motor to work at the steady state, and recording the rotational speed n in the steady state after the motor falls on the steady state.

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