This article proposes a predictive maintenance algorithm based on machine learning to predict the remaining useful life of industrial assets. The synthetic dataset N-CMAPSS was used, which contains a performance degradation dataset until the presence of failure of an aircraft fleet under real flight conditions is detected. The principal element of maintenance focuses on the predictability of the remaining useful life; predictive models need performance information of an asset from the beginning to failure. [1]. The approach considers the data analysis to understand the data behavior. Monotonicity and principal component analysis are applied in the variable selection. Furthermore, convolutional neural networks are integrated to predict the remaining useful life, resulting in a 10.91 mean of RSME. The “DS01” dataset was used for training; six engines were used for the training dataset and the remaining four for the test dataset.

This paper proposes to solve the problem of the simple Traveler Agent by applying combined heuristic methods of local search. The proposed method evaluates a random initial route, using a modified simulated annealing algorithm that seeks to improve the route's cost globally, and finally, using a 2-opt local search technique that improves the cost. Different instances of TSPLIB data are evaluated and compared with other methods. The proposed method is compared with other techniques such as Ant Colony Optimization algorithm (ACO), Neural Networks (NN), Particle Swarm Optimization (PSO), and Genetics Algorithm (GA), where results are obtained sub-optimal solution, but in shorter computational time; Validation is obtained by applying two types of statistical indices, the relative percentage error and the coefficient of variation, as well as the execution times in seconds. Finally, using the instances, a MAPE equal to 3.0353% is obtained.

This paper develops conditions for sensor fault detection and isolation of nonlinear descriptor systems. The proposed methodology is based on a bank of observers, thus a novel approach is proposed to design Takagi-Sugeno observers in descriptor form. Traditionally, for descriptor systems, the designing conditions employ an augmented state vector whose elements are the state and its derivative. The proposed approach overcomes previous results in the literature by means of a novel augmented estimated vector, therefore conditions in terms linear matrix inequalities are directly obtained. The effectiveness of the given methodology is illustrated through a numerical example.