document: Design and implementation of a new sliding-mode observer for speed-sensorless control of induction machine In this letter , a new sliding-mode-sensorless control algorithm is proposed for the field-oriented induction machine drive . In the proposed algorithm , the terms containing flux , speed , and rotor time constant , which are common in both current and flux equations , in the current model of the induction machine are estimated by a sliding function . The flux and speed estimation accuracy is guaranteed when the error between the actual current and observed current converges to zero . Hence , the fourth-order system is reduced to two second-order systems , and the speed estimation becomes very simple and robust to the parameter uncertainties . The new approach is verified by simulation and experimental results
doc_bio_tags: O O O O O O O O O O O O B I O O O O O O O O O O O O O O B I O O O O O O O O O O B O B O O B I I O O O O O O O O B O O O O B I O O B I O O O O B I O O B O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O B I O O O O O O O O O O O
extractive_keyphrases: induction machine flux speed rotor time constant current model sliding function parameter uncertainties
abstractive_keyphrases: speed-sensorless control sliding-mode observer induction motor drive sensorless control flux equations current equations speed estimation accuracy fourth-order system reduction