Robust nonlinear damping backstepping with augmented observer for position control of permanent magnet stepper motors.

Won Hee Kim Youngwoo Lee Donghoon Shin Chung Choo Chung Robust nonlinear damping backstepping with augmented observer for position control of permanent magnet stepper motors. 5325-5330 2014 ACC https://doi.org/10.1109/ACC.2014.6858749 conf/amcc/2014 db/conf/amcc/acc2014.html#KimLSC14