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Motor controller for electric blower motors

  • US 10,294,950 B2
  • Filed: 05/15/2017
  • Issued: 05/21/2019
  • Est. Priority Date: 05/15/2017
  • Status: Active Grant
First Claim
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1. A motor controller for an electric motor configured to drive a blower to generate an airflow, said motor controller comprising:

  • a memory configured to store a single speed-to-airflow ratio associated with an airflow restriction on the blower; and

    a processor coupled to said memory and configured to;

    receive a command for a calibrating airflow;

    operate the electric motor in a constant airflow mode to generate the calibrating airflow at a calibrating speed;

    write the calibrating speed and the calibrating airflow to said memory as the single speed-to-airflow ratio;

    receive a first command for a first objective airflow;

    compute a first objective speed based on the single speed-to-airflow ratio and the first objective airflow;

    operate the electric motor at the first objective speed to generate a first output airflow;

    receive a second command for a second objective airflow;

    compute a second objective speed based on the single speed-to-airflow ratio and the second objective airflow; and

    operate the electric motor at the second objective speed to generate a second output airflow.

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