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Variable link sensorless brushless direct current motor controller for space and hardened applications

  • US 9,444,376 B2
  • Filed: 02/22/2013
  • Issued: 09/13/2016
  • Est. Priority Date: 02/22/2013
  • Status: Active Grant
First Claim
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1. A motor controller system comprising:

  • a hardened field programmable gate array;

    a back electromotive force decoder circuit at least partially controlled by the field programmable gate array;

    a filter configured to condition a back electromotive force signal in the decoder circuit, the filter having at least one cutoff frequency, wherein the at least one cutoff frequency is continuously conditioned by the field programmable gate array to reduce phase shift of the back electromotive force signal; and

    a current limiter circuit configured to protect the motor, wherein the current limiter circuit is configured to respond separately to an average current and to a peak current.

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