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

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

Aug 15, 2022 277 likes •513 views

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 Applications

  • Leandro dos Santos Coelho

Pontifícia Universidade Católica do Paraná, Laboratório de Automação e Sistemas Rua Imaculada Conceição, 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

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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

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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.

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Literature review of variable structure control (VSC)

! design methods and applications

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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.

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Variable structure control (VSC)

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Self-tuning discrete VSC

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Self-tuning discrete VSC

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VSC design based on Lamarckian evolution

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Lamarckian optimization procedure

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Fast evolutionary programming

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Simplex method of Nelder and Mead

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Hybrid method of Lamarckian evolution

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Hybrid method of Lamarckian evolution

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Hybrid method of Lamarckian evolution

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Hybrid method of Lamarckian evolution

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Simulation results

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Simulation results of VSC design

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Simulation results of VSC design

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Simulation results of VSC design

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Simulation results of VSC design

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Conclusion

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Conclusion

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