Dept. of Electr. Eng., National Taiwan Univ.Lee, Hou-TsanHou-TsanLeeLI-CHEN FUHsu, Su-HauSu-HauHsu2018-09-102018-09-10200207431619https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036060130&doi=10.1109%2fACC.2002.1025375&partnerID=40&md5=cb72e5e07fa7cf480d4169c4e4a390f3http://scholars.lib.ntu.edu.tw/handle/123456789/298287The paper proposes an adaptive speed/position tracking control of an induction motor subject to unknown load torque. The controller is developed based on a dynamic model obtained from the d-q-axis model (w.r.t. the stationary reference frame) of the motor under a special nonlinear coordinate transform so that either speed or position control objective can be fulfilled. The underlying design concepts is to endow the close-loop system with so-called maximal power transfer property while under lack of knowledge of some key system parameters, such as the rotor resistance, motor inertia and motor damping coefficient. To be rigours, the proposed control scheme comes along with a thorough proof derived based on Lyapunov stability theory. The experimental results are also given to validate the effectiveness of the presented control scheme.application/pdf398144 bytesapplication/pdfInduction motor control; Unknown load torque; Closed loop control systems; Induction motors; Lyapunov methods; Mathematical models; Position control; Speed control; System stability; Torque measurement; Uncertain systems; Adaptive control systemsconference paper10.1109/ACC.2002.10253752-s2.0-0036060130