International Federation of Automatic Control
3rd IFAC SYMPOSIUM on SYSTEM, STRUCTURE and CONTROL

Foz do Iguassu, Brazil October 17th - 19th, 2007

Friday Evening

Session FE1: Robust Control II


Chair: Shinji Hara - Japan
Co-chair: Shankar Bhattacharyya - United States
Room: Assunção
2007-10-19
From 16:00 to 18:00
Tracking Methodology with Zeros Variation and Disturbance Rejection Applied to Uncertain Systems
Edvaldo Assunção, Cristiano Quevedo Andrea, Marcelo Carvalho Minhoto Teixeira, Rodrigo Cardim, João Onofre Pereira Pinto
Contact: Cristiano Quevedo Andrea - Brazil
17:20-17:40
Abstract:
The problem of signal tracking and disturbance rejection in linear continuous time-invariant systems with uncertain parameters is solved using a zero variation and dynamic output feedback, considering polytopic uncertainties in the plant parameters. It is used a feedback controller Kp(s) to minimize the H2 guaranteed cost from the disturbance input to the measured output. And so, one uses the zeros of the controller in order to design the tracking system. The design is formulated in Linear Matrix Inequality (LMI) framework, such that the optimal solution of the stated control problem is obtained. Simulation of a practical problem illustrates the effectiveness of the proposed method. Copyright © 2007 IFAC.