Low Speed Drive of Motor Using Least Order Load $Torque{\cdot}Inertia$ Observer

최소차원 토크${\cdot}$관성 관측기를 이용한 전동기 극저속 운전

In this paper, an instantaneous speed observer with a reduced order is proposed to implement an indirect control for an motor with excellent dynamic stability and performance in a very low speed region. The proposed observer can estimate the instantaneous speed in very low speed region and simplify the system configuration by adopting a least order load torque-inertia observer to estimate the load torque and the rotor speed. Simulation are carried out to illustrate the performance of the proposed estimator at very low speed.