Showing papers by "Aurel Vlaicu University of Arad published in 2004"
25 Jul 2004
TL;DR: A Takagi-Sugeno fuzzy controller and an interpolative fuzzy controller for tire slip control in anti-lock braking systems are proposed and simulation results show the control system performance enhancement ensured by the fuzzy controllers in comparison with the conventional PI ones.
Abstract: A Takagi-Sugeno fuzzy controller and an interpolative fuzzy controller for tire slip control in anti-lock braking systems are proposed. Both fuzzy controllers are developed using a benchmark consisting of a simplified nonlinear model describing the slip dynamics for a wheel, and perform the merge between 64 local PI or PID controllers. By employing local linearized models of the controlled plant, the local controllers are developed in the frequency domain. Development methods for the two fuzzy controllers are also offered. Simulation results show the control system performance enhancement ensured by the fuzzy controllers in comparison with the conventional PI ones.
59 citations
TL;DR: In this article, the stereochemistry of new 1,3-dioxane derivatives obtained by the acetalization of 2-acetyl and 2,6diacetylpyridine with several 1-3-propanediols have been investigated by NMR methods and by X-ray diffractometry.
Abstract: The stereochemistry of new 1,3-dioxane derivatives obtained by the acetalization of 2-acetyl and 2,6diacetylpyridine with several 1,3-propanediols have been investigated by NMR methods and by X-ray diffractometry. The anancomeric structure of the compounds and the axial orientation of the aromatic group in both type of derivatives was revealed.
3 citations
TL;DR: It is proved that all convexity concepts are defined by segmental methods, which means that the type of segmental method involved in the construction of discrete conveXity determines the subclass to which it belongs.
Abstract: In the general first-level classification of the convexity properties for sets, discrete convexities appear in more classes. A second-level classification identifies more subclasses containing discrete convexity properties, which appear as approximations either of classical convexity or of fuzzy convexity. First, we prove that all these convexity concepts are defined by segmental methods. The type of segmental method involved in the construction of discrete convexity determines the subclass to which it belongs. The subclasses containing the convexity properties that have discrete particular cases are also presented.
2 citations