WSC7 7th Online World Conference on Soft Computing in Industrial - PowerPoint PPT Presentation

WSC7 – 7th Online World Conference on Soft Computing in Industrial Applications �� Leandro dos Santos Coelho Pontifícia Universidade Católica do Paraná, Laboratório de Automação e Sistemas Rua Imaculada Concei çã o, 1155, 80215-030 Curitiba, PR, BRAZIL, E-mail: lscoelho@rla01.pucpr.br Renato A. Krohling Federal University of Espírito Santo, Electrical Engineering Department Campus de Goiabeiras, C.P. 01-9001, 29060-970, Vitória, ES BRAZIL, E-mail: renato@ele.ufes.br

Abstract ! self-tuning discrete-time Variable Structure Control (VSC) design where the optimization task of controller parameters is realized by a new Lamarckian evolution approach based on evolutionary programming combined with a direct search method. ! Simulation results on a continuous stirred tank reactor, that presents open-loop unstable dynamic and nonlinear behaviors, are shown.

Literature review of variable structure control (VSC) ! design methods and applications ��

Variable structure control (VSC) ! The theory of VSC was developed for robust control of uncertain nonlinear systems. ! Continuous-time VSC has been extensively studied and has been used in various applications. ! Much less is known of discrete-time sliding mode controllers. In practice it is often assumed that the sampling frequency is sufficiently high to assume that the closed-loop system is continuous-time. ! Another possibility is to design the sliding mode controller in discrete-time, based on a discrete-time model of the sampled system under control.

Variable structure control (VSC) ! �� ! �� ! ��

Self-tuning discrete VSC ! �� ! ��

VSC design based on Lamarckian evolution ! �� ! �� ! �� ! �� ! �� ! �� ! ��

Lamarckian optimization procedure ! ��

WSC7 7th Online World Conference on Soft Computing in Industrial - PowerPoint PPT Presentation

WSC7 7th Online World Conference on Soft Computing in Industrial Applications

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WSC7 7th Online World Conference on Soft Computing in Industrial - PowerPoint PPT Presentation

WSC7 7th Online World Conference on Soft Computing in Industrial Applications

Cooperative Particle Swarm Optimization for Robust Control System Design Renato A. Krohling

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C ONSTANTS IN GEP Cndida Ferreira WSC7 2002 Gepsoft A IM Analyse the usefulness of numerical

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