Patent ID: 11936325
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor control method, comprising:
starting a brushed direct current (BDC) motor by applying electrical drive to the motor;
in an initial time interval following the starting of the motor, detecting discontinuities in a coil current;
during the initial time interval, generating an estimate of one or more motor parameters;
generating an historical angular frequency model estimate based on the estimated motor parameters;
determining an angular frequency model estimate responsive to coil current and motor voltage sensed at the motor;
generating a corrected ripple count based on the angular frequency model estimate;
compensating the corrected ripple count based on the historical angular frequency model estimate; and
adjusting the electrical drive applied to the motor responsive to the compensated corrected ripple count.