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EFOSMO is an abbreviation of encoderless full order sliding mode observer. It is used to estimate the unmeasured variables in electrical drives to implement the encoderless control method. In model based observer methods, mostly the estimated speed is a necessary feedback for the observer, such as Model Reference Adaptive System (MRAS) (1) and Full order Sliding mode observer (FOSMO) (2). The speed calculation is normally the last step of the estimation, which means the cumulative estimation error will be injected to the observer. To reduce the influence of the estimated speed, an EFOSMO is proposed in (3). By considering the observer in a 'dq' frame, the observer does not need the feedback of the calculated speed any more, which means the error injected by the calculated speed is removed from the observation system. == References == (1) Wang, F.; Zhe, C.; Stolze, P.; Stumper, J-F.; Rodriguez, J.; Kennel, R., "Encoderless Finite-State Predictive Torque Control for Induction Machine With a Compensated MRAS", IEEE transactions on Industrial Informatics, Vol. 10, NO. 2, MAY 2014. (2) Lascu, C.; Boldea, I.; Blaabjerg, F., "Variable-structure direct torque control- A class of fast and robust controllers for induction machine drives", IEEE transactions on Industrial Electronics, Vol. 51, NO. 4, Aug. 2014. (3) Wang, F.; Zhang, Z.; Davari, A.; Fotouhi, R.; Khaburi, D.; Rodriguez, J.; Kennel, R., "An Encoderless Predictive Torque Control for an Induction Machine with a Revised Prediction Model and EFOSMO", IEEE transactions on Industrial Electronics, 2014, online published. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「EFOSMO」の詳細全文を読む スポンサード リンク
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