Motor alignment control

A system controller for aligning a motor drive system for a motor, comprising:

• an input configured to receive a phase current sense signal representative of a phase current of the motor,
• wherein the system controller is configured to perform operations comprising:
• beginning an alignment sequence;
• sampling the phase current sense signal;
• comparing a sample of the phase current sense signal to a previous sample of the phase current sense signal;
• tracking a maximum value of the phase current sense signal in response to the comparing of the sample to the previous sample of the phase current;
• and
• comparing the maximum value of the phase current sense signal to the sample of the phase current sense signal;
• detecting a decrease in the phase current sense signal in response to comparing the maximum value to the sample;
• ending the alignment sequence in response to detecting the decrease;
• and
• an output configured to transmit control signals to control operation of the motor drive system.