MRAC without the knowledge of relative degree

ISBN-13: 9783848495146 / Angielski / Miękka / 2012 / 104 str.

Xiao Hu; Weider Chung; Kai S. Yeung

Opis

The purpose of Model Reference Adaptive Control (MRAC) is to create a controller with adjustable parameters to obtain the desired response from a reference model. One of the basic assumptions in MRAC is that the relative degree of the plant is known exactly. However, this assumption is too restrictive for some practical plants, since the relative degree of the plant may not be specified in advance. The study of MRAC with unknown relative degree has been important from both theoretical and practical point of view. This dissertation focuses on a new design approach for the model reference adaptive control of a single-input single-output linear time-invariant plant to relax this crucial assumption. This new MRAC scheme guarantees the signal boundness and zero tracking error. All the parameter update laws are derived based on Lyapunov stability theory. Simulation studies are illustrated to show the effectiveness of the proposed method.

O autorze

Xiao Hu received her Master s degree in May 2004, and Ph.D degree in May 2011. She majored in Electrical Engineering in the University of Texas at Arlington. Prior to the master program, she worked for China Mobile in Chengdu China during 1997-2002. Her interest is about the Control System Design and Adaptive Systems.