Uso de Pré-Compensador Dinâmico no Projeto de Controladores Robustos para Sistema Multivariável Instável (Using Stabilizer Dynamic Pre-Compensator to Design Robust Controllers for an Unstable MIMO System)

Edson Jorge Matos (edsonjm@ufpa.br)1, Raimundo Neves Souza (raneves@oi.com.br)2, Jorge Roberto Brito Souza ( jrgbrito@ufpa.br)1


1UFPA - Universidade Federal do Pará
2CEFET - Centro Federal de Educação Tecnológica do Pará

This paper appears in: Revista IEEE América Latina

Publication Date: March 2008
Volume: 6,   Issue: 1 
ISSN: 1548-0992


Abstract:
This paper addresses the problem of designing LQG/LTR controllers for unstable multivariable systems. Its main proposal is to design a stabilizer dynamic pre-compensator to stabilize the system before designing the final LQG/LTR controller. This approach overcomes the problems that the This paper addresses the problem of designing LQG/LTR controllers for unstable multivariable systems. Its main proposal is to design a stabilizer dynamic pre-compensator to stabilize the system before designing the final LQG/LTR controller. This approach overcomes the problems that the original procedure can not avoid when it deals with unstable systems, but the order of the overall controller gets increased.

Index Terms:
LQG/LTR controllers. Dynamic compensators. Loopshaping. Multivariable systems.   


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