Single chip advanced adaptive sensorless motor shaft position detection

An electronic circuit comprising:

• at least one input port configured to receive input signals, the input signals including a current signal originating from a brushed direct current motor (BDCM);
• logic circuitry coupled to the at least one input port and configured to:
• isolate a ripple waveform from the current signal;
• determine a wave count of the ripple waveform;
• and
• determine a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform;
• and
• at least one output port coupled to the logic circuitry and configured to transmit one or more output signals, the one or more output signals including data representative of the position of the movable structure determined by the logic circuitry.

One or more non-transitory computer readable media having stored thereon program instructions which when executed by at least one processor, cause a machine to:

• isolate ripple waveform from a current signal originating from a brushed direct current motor (BDCM);
• determine a wave count of the ripple waveform;
• and
• determine a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform.