Lee, Hou-TsanHou-TsanLeeChang, Jaion-SheaJaion-SheaChangLI-CHEN FU2018-09-102018-09-10200008906327http://scholars.lib.ntu.edu.tw/handle/123456789/289924https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034155370&doi=10.1002%2f%28SICI%291099-1115%28200003%2f05%2914%3a2%2f3%3c297%3a%3aAID-ACS582%3e3.0.CO%3b2-H&partnerID=40&md5=5b401784ead4ff6017608a0b5e6bad1dOn the basis of a novel dynamic model obtained under a special non-linear co-ordinate transform on a d-q-axis model (w.r.t. the stationary reference frame) of an induction motor, a simple but effective control law for speed regulation is proposed in this paper. This controller is designed using the concept of the field orientation and the property of linear PI-controller, and is shown to be robust with respect to variation of system parameters and load structure. To be rigorous, a Lyapunov theorem with a simple iterative criterion derived in this paper proves the local exponential stability of the system around any desired speed. Numerical simulations are also given to show the effectiveness of the presented control law.application/pdfapplication/pdfComputer simulation; Induction motors; Iterative methods; Linear control systems; Lyapunov methods; Mathematical transformations; Nonlinear control systems; Robustness (control systems); Speed control; System stability; Two term control systems; Electromechanical model; Speed regulation; Adaptive control systemsjournal article10.1002/(SICI)1099-1115(200003/05)14:2/3<297::AID-ACS582>3.0.CO;2-H2-s2.0-0034155370