Ajuste de controlador PI mmbarcado em CLP baseado em estimativa de robustez
Automatic process control is a growing demand in industries that seek techniques that automate the tuning of control systems and ensure efficiency, quality and safety. This work aims to implement a method of assessment and readjustment of PI controllers in Programmable Logic Controller (PLC), in...
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| Formato: | Dissertação |
| Lenguaje: | por |
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Brasil
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| Acceso en línea: | https://repositorio.ufrn.br/jspui/handle/123456789/24972 |
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| Sumario: | Automatic process control is a growing demand in industries that seek techniques that
automate the tuning of control systems and ensure efficiency, quality and safety. This
work aims to implement a method of assessment and readjustment of PI controllers in
Programmable Logic Controller (PLC), in order to improve the robustness of the system.
The method is inspired by works from the literature and has two stages, the first step
is to evaluate the robustness of the controller, in which its gain and phase margins are
estimated. In the second step the parameters of the PI controller are adjusted to ensure
that the robustness criteria are not violated. It was intended to program the method directly
into a PLC to work together with its controller. Initially, results of numerical simulations
are presented to illustrate the method’s operation. Then, the implementation of the method
through PLC programming is described. Experiments results in real plants controlled by
PLC illustrate the effectiveness of the method. |
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