9FUKUMOTO TETSUYA, KATO YOUSUKE, ,KURITA KAZUYA,et al. Performance improvement of induction motor speed sensor less vector control system using an adaptive observer with an estimated flux feedback in Low Speed Range[J]. Electrical Engineering, 2009,169 (3) : 33-46.
10JADOT, MALRAIT, SEPULCHRE.Daptive regulation of vector controlled induction motors[J].IEEE Transactions on Control Systems Technology, 2009 ( 17 ) :646-657.