文档介绍：IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 50, NO. 4, AUGUST 2003 733
Wavelet work Control for Induction Motor
Drive Using Sliding-Mode Design Technique
Rong-Jong Wai, Member, IEEE, Rou-Yong Duan, Jeng-Dao Lee, and Han-Hsiang Chang
Abstract—This paper addresses an adaptive observation formance induced by the variation of the rotor time constant.
system and a wavelet-work (WNN) control system for With the MRAS approach and indirect field-oriented method,
achieving the favorable decoupling control and high-precision the decoupled control of the IM can be assured. However, the
position tracking performance of an induction motor (IM) drive.
First, an adaptive observation system with an inverse rotor control performance of the IM is still influenced by uncertain-
time-constant observer is derived on the basis of model refer- ties such as mechanical parameter variation, external distur-
ence adaptive system theory to preserve the decoupling control bance, unstructured uncertainty due to nonideal field orienta-
characteristic of an indirect field-oriented IM drive. The adaptive tion in transient state, unmodeled dynamics, etc. In the control
observation system is implemented using a digital signal processor fields, the acquirement of the uncertainty information is an im-
with a high sampling rate to make it possible to achieve good
dynamics. Moreover, a WNN control system is developed via the portant research topic. From a practical point of view, however,
principle of sliding-mode control to increase the robustness of it is usually very difficult to get plete information of un-
the indirect field-oriented IM drive with the adaptive observation certainties. Therefore, the motivation of this paper is to design a
system for high-performance applications. In the WNN control suitable control scheme to confront the uncertainties existed in
system, a WNN is utilized to predict the uncertain system dy- practical applications of an indirect field-orient