Frequency Features Based Fuzzy System for Rotating Machinery Vibration Analysis Using Smartphones Low-Cost MEMS Sensors

Abstract

Smart devices have become an important entity for many applications in daily life activities. These devices have witnessed a rapid improvement in its technology to fulfill the increasingly diverse usage demands. In the meanwhile, rotating machinery vibration analysis based on low-cost sensors has gained a considerable attraction over the last few years. For a long time, the vibration analysis of machines has been accepted as an effective solution to detect and prevent failures in complex systems to avoid the sudden malfunction. The objective of this work is to use MEMS accelerometer measurements to monitor the different level of vibration of a machine. This work presents a new technique for rotating machinery vibration analysis. It uses Fast Fourier Transformation as a feature extraction algorithm and Fuzzy Logic System (FLS) as the classifier algorithm. A smartphone accelerometer is used to collect the data from the vibrating machine. The performance of the proposed technique is tested using data from different vibration resources at a different speed of operations. The results are discussed to illustrate the various vibration levels.

Use of Smartphone Applications in Vibration Analysis : Critical Review

“…It could be used to indicate the need for an immediate maintenance or further assessment of causes. The new technology of low-cost MEMS sensors is emerging new trends for vibration analysis where it is facilitating a wider usage for this type of measurements [5]. Which demonstrated the possibility of its application also in the industry depending on the sensor installed on the smartphone.…”

“…In recent years, researchers have been attracted to use the smartphone with low-cost Electro-Mechanical Micro Sensors (MEMS) in the field of mechanical vibration analysis, which achieves new achievements day after day. The use of smartphones for vibration analysis allows researchers to develop new applications for the different devices of rotating machines, from small appliances to the level of the industrial plant [5].…”

Dielectric Permeability of Forestry Depending on Environmental Parameters in Radio Frequency Monitoring

“…Для нечеткого вывода функции принадлежности используем метод Мамда-ни 13 [6], что предполагает разработку базы правил нечеткой продукции.…”

“…Используя описание вариантов сочетаний входных параметров (V i и α), а также большее количество значений лингвистических переменных (например, «Средняя», «Большая», «Малая») и специфических особенностей явления, можно формализовать базу правил нечеткого вывода функции диэлектрической проницаемости (таблица). 13 Нечеткий вывод результирующей функции выполнен по методу Мамдани [14][15] [6]. Схема вывода в MATLABформате приведена на рис.…”

“…Известно большое количество работ по нечеткому моделированию технических объектов, например [11][12][13]. Однако следует отметить, что одним из отличий зарубежных исследований от российских является значительно большее количество публикаций по различным гуманитарным направлениям использования ТНМ [14][15][16], в юриспруденции [17], экономике [18] и, что может быть особенно ценно и перспективно, медицинских науках [19][20][21].…”