US 11,720,078 B2
System for adaptive bandwidth control of electric motors using frequency response analysis method
Ramesh Tiruvannamalai Ramamoorthy, Sugar Land, TX (US); Sam Gnana Sabapathy, Sugar Land, TX (US); and Manish Bhardwaj, Sugar Land, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Feb. 16, 2021, as Appl. No. 17/176,290.
Application 17/176,290 is a continuation of application No. 16/403,156, filed on May 3, 2019, granted, now 10,921,778.
Prior Publication US 2021/0181711 A1, Jun. 17, 2021
Int. Cl. G05B 19/408 (2006.01); H02P 21/22 (2016.01); H02P 27/12 (2006.01)
CPC G05B 19/4083 (2013.01) [H02P 21/22 (2016.02); H02P 27/12 (2013.01); G05B 2219/41238 (2013.01); G05B 2219/41322 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a tone generator configured to couple to a motor gain circuit and configured to provide a characterization tone signal to the motor gain circuit, wherein the motor gain circuit is associated with a motor, and the characterization tone signal has a frequency outside of an operating frequency range of the motor;
a parameter circuit configured to:
couple to the motor to receive a set of phase current signals; and
determine a response of the motor to the characterization tone signal by separating the characterization tone signal from the set of phase current signals; and
a gain adjustment circuit coupled to the parameter circuit and configured to:
couple to the motor gain circuit;
determine a gain adjustment based on the response of the motor to the characterization tone signal; and
provide the gain adjustment to the motor gain circuit.