Robust speed sensorless induction motor drive

Faa Jeng Lin, Rong-Jong, Wai Pao Chuan Lin

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


A speed sensorless induction motor (IM) drive with robust control characteristics is introduced. First, a speed observation system, which is insensitive to the variations of motor parameters, is derived on the concept of sliding mode. Next, an integral-proportional (IP) speed controller using the estimated speed signal is designed to stabilize the speed loop. Then, to preserve the robust control performance under parameter variations and external load disturbance, an adaptive uncertainty observer with feedforward control is proposed. The adaptive uncertainty observer is implemented to estimate the lump of uncertainty of the controlled plant. To increase the accuracy of the estimated values, the speed observation system is implemented using a digital signal processor (DSP) with a high sampling rate.

Original languageEnglish
Pages (from-to)566-578
Number of pages13
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number2
StatePublished - 1999


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