Inexpensive digital valves are implemented to accurately control the position of a pneumatic cylinder using pulse width modulation (PWM) technique. A fuzzy PI controller is designed and implemented to overcome the nonlinearity inherited in the system due to air compressibility, dry friction and the nature of the digital valves. The actuator under control is a vertical double-acting single-rod p...

The objective of this study was to develop a Fuzzy Rule-Based System (FRBS) for the mathematically modeling irrigation level effect on beet cultivars ( Beta vulgaris L.). From an agronomic experiment carried out in protected environment (greenhouse), it defined as input variables, each cultivar, levels (depths 25, 40, 55, 70, 85, and 100% ETc), which ETc is crop evapotranspiration [mm d−1], whi...

In the recent past, demand for multifunctional and lightweight materials have increased steadily creating an increase in Hybrid polymer matrix composite which consists multiple fibers conventional resins. this study, a hybrid comprising of two reinforcements - natural silk fiber E-Glass Epoxy resin is partially eco-friendly has been fabricated effect drilling, by using 8 facet solid carbide dri...

Optimal solutions derived from linear programming models depend entirely on input parameters, which may present some imprecision because they come estimates. Fuzzy allows the incorporation of these uncertainties in models, can include flexibility resources, costs, goals, and constraints. This paper aimed to show new optimal for a model minimize equivalent annual cost micro-irrigation systems sl...

Assist. prof. dr. Daniela Maffiodo, prof. dr. Terenziano Raparelli, prof. dr. Guido Belforte; all: Dipartimento di Meccanica, Politecnico di Torino, Italy Abstract: Due to the complex thermomechanical characteristics of Shape Memory Alloy wires, it is important to develop control systems in order to design new applications for these smart materials. This paper presents three SMA wire position c...

In the papers [B1] and [B2] we have established some conditions for the finitude of the Hausdorff h-measure of some set. Now, we shall determine a better minorant for this measure. 1 Definitions We denote by R the euclidean n dimensional space and by d(E) the diameter of a set E ⊂ R. Definition 1 If r0 > 0 is a fixed number, a continuous function h(r), defined on [0, r0) , nondecreasing and suc...

Diabetic Retinopathy (DR) is a very rigorous and extensive eye disease which causes blindness in diabetic patients. DR primary cause for blindness is not for the reason that it has the highest occurrence but it often remains unobserved until severe vision loss occurs. Diabetic Retinopathy is characterized by changes in the retina that comprise of change in blood vessel diameter, micro aneurysms...