Advantages of Fuzzy Control Application in Fast and Sensitive Technological Processes
This paper presents the advantages of fuzzy control use in technological processes control. The paper presents a real application of the Linguistic Fuzzy-Logic Control, developed at the University of Ostrava for the control of physical models in the Intelligent Systems Laboratory. The paper presents an example of a sensitive non-linear model, such as a magnetic levitation model and obtained results which show how modern information technologies can help to solve actual technical problems. A special method based on the LFLC controller with partial components is presented in this paper followed by the method of automatic context change, which is very helpful to achieve more accurate control results. The main advantage of the used system is its robustness in changing conditions demonstrated by comparing with conventional PID controller. This technology and real models are also used as a background for problem-oriented teaching, realized at the department for master students and their collaborative as well as individual final projects.
Control, fuzzy logic, sensitive system, technological proves.
Web Application for Evaluating Tests in Distance Learning Systems
Distance learning systems offer useful methods of
learning and usually contain a final course test or another form of
test. The paper proposes a web application for evaluating tests using
an expert system in distance learning systems. The proposed web
application is appropriate for didactic tests or tests with results for
subsequent studying follow-up courses. The web application works
with test questions and uses an expert system and LFLC tool for test
evaluation. After test evaluation, the results are visualized and shown
to the student.
Distance learning, test, uncertainty, fuzzy, expert