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Higher education courses are increasingly created as student organized collections of interrelated modules. At the same time, frequent change of subject matter and knowledge in its background must be handled. Above and other factors created and recognized a need for efficient computer based course management. Conventional computer aided teaching methods are(More)
We provide solution of first order linear fuzzy differential equations by variation of constant formula. The differentiability concept used in this paper is the strongly generalized differentiability since a fuzzy differential equation under this differentiabil-ity can have decreasing legth of support function. Under some conditions we provide solution with(More)
This paper offers a comprehensive study of information aggregation in intelligent systems prompted by common engineering interest. After a motivating introduction we consider aggregation functions and their fundamental properties as a basis for further development. Four main classes of aggregation functions are identified, and important subclasses are(More)
—Success in engineering activities mostly depends on success in transfer of human intent into product. Recently, product development applies product model as medium to describe product information in product data base. While modeling gives a great chance for the description of engineer's intent, current information based product models are not capable of(More)
—A novel approach to fuzzy modeling based on the tuning of parametric conjunction operations is proposed. First, some novel methods for the construction of parametric generalized conjunction operations simpler than the known parametric classes of conjunctions are considered and discussed. Second, several examples of function approximation by fuzzy models,(More)
In the design of adaptive controllers the “Robust Fixed Point Transformations (RFPT)“-based approach is a recently developed, very simple alternative of “Lyapunov's 2nd Method”. The main difference between them is that while the traditional approach concentrates on guaranteeing global stability at the cost of directly not(More)
The problem of fuzziy conjunction and disjunction selection for overall control is being considered here. The implied procedures in systems with fuzzy control need neither replacement nor association of conjunction and disjunction, since it is possible to consider the most general definitions of these actions without their properties, as axioms. In this(More)
In this paper a “Robust Fixed Point Transformation (RFPT)” based adaptive control of an underactuated physical system is stabilized by adaptively tuning only one parameter of a single fuzzy membership function. This approach serves as an alternative to Lyapunov's “direct” method that suffers from mathematical difficulties when a(More)