Orlando R.

In this paper an algorithm to describe the ideal spur gear profile is proposed. The involute of the base circle is used to draw the tooth. Three parameters are the required algorithm inputs: the modulus, the number of teeth and the pressure angle. The algorithm is based upon the equations of the circular head and root thickness. A pseudocode is given which can be translated into any machine language. Two codes are also proposed in order to test the algorithm: A Visual Basic code (which can run as a macro i

Stability is a crucial issue to consider for control system design. In this paper a new multi-objective approach to approximate the stabilizing region for linear control systems is proposed. The design method comprises two stages. In the first stage, a bi-objective sub-problem is solved: the algorithm aims to calculate the vertices that maximize both the volume of the decision space and the percent of stable individuals generated within the decision space. In the second stage, the information gathered durin

A Takagi-Sugeno (T-S) Fuzzy Logic Controller (FLC) is tuned using the algorithm NSGA-II. The proposed method eliminates laborious design steps such as tuning of membership functions and conclusion table parameters. An object approach representation is used to build an adequate FLC representation. Object is an individual abstraction in order to improve crossover a mutation operators. The Genetic Algorithm optimization is carry out over signal response performance parameters, in this work: settling time, rise