Kyo-Beum Lee, Joong-Ho Song, Ick Choy, and Ji-Yoon Yoo, “Improvement of Low Speed Operation of Electric Machine Using ROELO for Inertia Identification,” The Transactions of the Korean Institute of Power Electronics, vol. 9, no. 3, pp. 231–239, Jun. 2004. > Paper

A new scheme to estimate the moment of inertia in the motor drive system in very low speed is proposed in this paper. The

simple estimation scheme, which is usually used in most servo system for low speed operation, is sensitive to the variation of the

machine parameter, especially the moment of inertia. To estimate the motor inertia value, Reduced-Order Extended Luenberger

Observer (ROELO) is applied. The effectiveness of the proposed inertia identification method using the ROELO is verified by

simulation and experiment.