Intelligent metrology, quality assurance and quality management play an important and basic role in modern cost-effective customer-driven design and manufacturing. To meet market demands in present and future global industrial world, manufacturing enterprises must be flexible and agile enough to respond quickly to product demand changes. With support of artificial intelligence and modern information technology it is possible to realise modern cost-effective customer-driven design and manufacturing taking into account the importance and basic role of quality management and metrology and...
The paper presents the experimental method of reducing the level of disturbances intensity in the buildings of an operating industrial plant. The necessity to examine the electromagnetic field resulted, among others, from the observed susceptibility of the workers of one department of the plant to various discomforts and diseases. Due to the measurements, sources of strong magnetic field within low frequencies have been located. On the basis of the analysis of the measurement results some conclusions and recommendations have been formulated. They concern the ways of reducing the level of...
The correlation between electric disturbances and vibration, as well as audible noise in marine frequency controlled AC drive systems was examined. The destructive influence of these factors on quality of life of a sea going vessel’s crew was indicated.
Two original electrical methods (temperature scalar field and electrical impedance spectrometry) of piled up dikes status monitoring are described. Using these methods, progress of water infiltration and deformations outside or inside of the dike body can be indicated. Some results are shown and discussed.
Diversity of applications of the electrical impedance method in the dike monitoring requires new approach to the construction of sensors – the electrode systems. Laboratory experiments show possibilities of the method that can contribute to the description of effects causing changes of stability of protective dikes, and can quantificate and localize these changes. Besides, the method makes possible to observe water pollution methods measuring changes of its conductivity. Different types of electrodes are required to reach optimal results of different classes of application. Problem of...
The piston-crank mechanism and influence of its technical condition on safety is presented. Diagnostic signals, which may be useful in diagnosing of mechanism elements are enumerated. The choice of taking the crankshaft free end as a point of diagnostic signals permanent measurement is justified. The classification of machine units and their loads are done. There is pointed out the possibility to increase the diagnosis accuracy made by measurements on the free end of crankshaft. Attention is drown to the necessity of considering dynamical characteristics of machine unit in process of...
Importance of telepresence application increases in the field of manufacturing. In production the main activities are divided; the locations of management, design, manufacturing and services are separated sometimes to diverse countries or continents. The development of information technologies and telecommunication made possible the sense of presence from a remote location. In this paper authors introduce a set of information processing methods that was developed to answer the new challenges of telepresence application in manufacturing. Process signals, such as cutting force or acoustic...
This paper highlights similarities between higher and lower levels of production, focusing on assignments and solution techniques. Various production levels are examined with respect to several aspects (complexity of relations, large number of parameters) and typical generic tasks (“classical” modelling, problem solving, optimization and submodel decomposition). For each issue, the paper highlights that due to similarities, the same classes of methods based on artificial neural networks (ANN) can be used for different levels of production, outlining a uniform approach.
The application of pattern recognition techniques, expert systems, artificial neural networks, fuzzy systems and nowadays hybrid artificial intelligence techniques in manufacturing can be regarded as consecutive elements of a process started two decades ago. The paper outlines the most important steps of this process. Agent-based systems are highlighted as promising tools for managing complexity, changes and disturbances in production. Further integration of approaches is predicted.
Nowadays, the most popular method of glass breaks detection in alarm systems, is analysis of acoustic signals (because of performances and costs). Often used method are based on detection of some characteristic frequencies, is insufficiently resistant to other (false) signals. As papers [5] and [6] show, signal decomposition by JTFA is more useful for this kind of signals. To develop a robust method of glass breaks detection the authors applied Wavelet Transformation. Presented in [1] and [2] early results did not meet strong requirements of VdS standard presented in [6]. In this paper a new...