Szybkie prototypowanie cyfrowego algorytmu fuzzy PID w sterowniku B&R

W artykule omówiono zastosowanie biblioteki B&R Automation Studio Toolbox, rozszerzającej program Simulink o możliwość szybkiego prototypowania algorytmów sterowania z przeznaczeniem do urządzeń sterujących B&R. Procedura szybkiego prototypowania algorytmów sterowania cyfrowego została przeprowadzona na przykładzie cyfrowego algorytmu fuzzy PID, który po wygenerowaniu z poziomu programu Simulink, przetestowano w rzeczywistym układzie sterowania temperaturą, w oparciu o urządzenie sterujące PP045.

In this paper there is described application of the B&R Automation Studio Toolbox, giving users of the Simulink an opportunity of rapid prototyping of digital control algorithms for B&R control devices using original embedded functions. The idea of the rapid prototyping in development of digital control systems is related to automatic generation of an executing code in the C/C++ languages with accordance to the control device architecture and specific conditions connected with realization of the algorithm in the real time. Many potentially good ideas have been thrown away because of a long time connected with implementation in a specific device platform and a risk of getting a completely faulty solution. At the beginning, elements of the system of rapid prototyping (Fig.1) with a detailed step by step procedure (Fig.2) are described. In the next part a conception of the fuzzy PID algorithm (Fig.3), being a modification of the classical PID algorithm, is given. Next, a methodology of development of the fuzzy PID algorithm including: fuzzification (Fig.4), inference and defuzzification (Fig.5) and arrangement of the prototype of the fuzzy PID algorithm (Fig.6) in the Matlab/Simulink environment is presented. In the final part of this paper, selected results of the experimental research, related to the temperature stabilization using the developed and implemented fuzzy PID algorithm according to the presented procedure are given and described.