An adaptive fuzzy dead-zone compensation scheme and its application to electro-hydraulic systems
AUTOR(ES)
Bessa, Wallace M., Dutra, Max S., Kreuzer, Edwin
FONTE
Journal of the Brazilian Society of Mechanical Sciences and Engineering
DATA DE PUBLICAÇÃO
2010-03
RESUMO
The dead-zone is one of the most common hard nonlinearities in industrial actuators and its presence may drastically compromise control systems stability and performance. Due to the possibility to express specialist knowledge in an algorithmic manner, fuzzy logic has been largely employed in the last decades to both control and identification of uncertain dynamical systems. In spite of the simplicity of this heuristic approach, in some situations a more rigorous mathematical treatment of the problem is required. In this work, an adaptive fuzzy controller is proposed for nonlinear systems subject to dead-zone input. The boundedness of all closed-loop signals and the convergence properties of the tracking error are proven using Lyapunov stability theory and Barbalat's lemma. An application of this adaptive fuzzy scheme to an electro-hydraulic servo-system is introduced to illustrate the controller design method. Numerical results are also presented in order to demonstrate the control system performance.
Documentos Relacionados
- Emulation and co-simulation of PMM attitude control system and aircraft electro-hydraulic system using FPGAs
- Emulação e co-simulação do sistema de controle de atitude da PMM e do sistema eletro-hidráulico de uma aeronave usando FPGAs
- Application of Higher Order Hamiltonian Approach to the Nonlinear Vibration of Micro Electro Mechanical Systems
- VECTOR-ELECTRO-OCULOGRAPHY AND ITS CLINICAL APPLICATION*†: TWO-DIMENSIONAL RECORDING OF EYE MOVEMENTS
- An SLP algorithm and its application to topology optimization