SR30  Topicos em Engenharia    Titulo: SEQUENTIAL AND PARALLEL FORMS FOR THE SOLUTION OF THE ALGEBRAIC RICCATI EQUATION BY A MODIFIED-SCHUR ALGORITHM   Resumo : THIS WORK PROPOSES A NEW PARALLEL AND DISTRIBUTED ALGORITHM FOR THE SOLUTION OF THE ALGEBRAIC RICCATI EQUATION. THIS ALGORITHM PRESENTS A PARALLELIZATION FOR A SPECIAL IMPLEMENTATION OF THE SCHUR METHOD (LAUB,1979), WHERE THE SYMPLETIC MATRIX IS MODIFIED THROUGH STABILIZED ELEMENTARY SIMILARITY TRANSFORMATION. IN THE FIRST MODULE OF THE ALGORITHM THE SYMPLETIC MATRIX IS TRANSFORMED TO THE HESSENBERG UPPER FORM (HUF). IN THE SECOND MODULE THE FRANCIS QR ALGORITHM IS APPLIED TO THE HUF TO OBTAIN THE REAL SCHUR FORM IN A PARALLELIZED WAY. OUR PURPOSE IS TO OBTAIN THE UNIQUE SYMMETRIC, NONNEGATIVE DEFINITE SOLUTION OF THE ALGEBRAIC RICCATI EQUATION. KEYWORDS: ALGEBRAIC RICCATI EQUATIONS, CONTROL SYSTEMS, PARALLEL AND DISTRIBUTED COMPUTATION, MODEL IDENTIFICATION.    Autores : Barreto, Gilmar 0 Bottura, Celso Pascoli Fonseca Neto, João Viana Tamariz, Annabell Del Real     Trabalho Completo :   COBEM99 | Comissão  Organizadora | Palestras | Sessões Técnicas | Autor | Simpósios e Sessões Especiais | Revisores |  Título  dos  Trabalhos | Local