The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Previous Knowledge-Based Engineering (KBE) systems have difficulty in effectively managing the whole design process which often makes the modeling of product fall into chaos. Process-oriented knowledge-based CAD system is proposed in this paper to manage product design process. For realizing process-oriented knowledge-based CAD system, mathematical representations of process design are proposed; the...
High-grade numerical control machines have gradually become the major machining equipments in our Chinese modern manufacture and the scale of its manufacturing system is also precise and integrated and intelligentized day by day, in order to ensure the machine to achieve its function effectively, research on test will be needed to do to analysis the fault symptoms and reasons which effect machine...
Enhancing the professional knowledge in different levels of operator is a critical success factor to advance the performance of manufacturing industry. However, the traditional training system is lack of scientific method to transfer the professional knowledge (tacit knowledge) to the operator. Applied RFID and Virtual Reality Technology in Knowledge-based Training System can convert the tacit knowledge...
Controlling the product quality and energy consumption within their desired ranges is the main objective for the operation of the smelting process of fused magnesia. With manual control, which is still widely used in practice, variations in the boundary conditions make it difficult for adjusting the setpoints for various control loops involved, thereby leading to compromised product quality and increased...
Aiming at the selection of knowledge meshes in the self-reconfiguration of knowledgeable manufacturing system, the method of fuzzy classification and searching for knowledge meshes based on information granular is proposed. Firstly, the matching degree, perfect degree and complexity coefficient between knowledge meshes are defined considering three aspects of quality, quantity and complexity. The...
This work covers the latest application oriented aspects of flexible and reconfigurable intelligent manufacturing control. In recent years, manufacturing enterprises and industrial plants must be aware of the changing custom environment and be capable to adapt and understand to customers needs. Latest technologies and research in intelligent manufacturing systems emphasize the interaction, collaboration...
Problem solving in engineering is increasingly based on knowledge based methods. The need for reliable, proven, and accepted knowledge makes introduction of computational intelligence in product development slow and problematic. In order to achieve advances in this area, object model definition, object model compatible knowledge definition, application oriented knowledge verification, and computational...
Knowledge engineering (KE) is playing an important part in product development field. With the development of artificial intelligence, the knowledge engineering is developing fast too. This paper made a comparison of different conception of knowledge engineering and knowledge based engineering (KBE), and studied on the application situation of KE and KBE. The main content of KE is also studied to...
In order to solve the NP-hard problem of crane scheduling, a simulation method of crane scheduling in workshop of steel-making plant is presented based on the multi agent system (MAS). According to the characteristics of crane scheduling, a MAS-based model for simulating crane scheduling in melt shop is built. The scheduling system mainly includes crane agent groups, work station agent groups and...
Berth and quay crane scheduling is one of the most complex parts in container terminal operations, which significantly affects the operational efficiency, energy consumption and operational cost of the entire container terminal. Therefore, it is necessary to develop an efficient berth and quay crane scheduling strategy from the perspective of knowledge, which aims at saving energy consumption and...
Manufacturing systems engineering projects depend on contributions from several engineering disciplines. These contributions consist of complex artifacts like mechanical, electrical, and software components and plans. While the software tools are strong in supporting each individual engineering discipline, there is very little work on engineering processes automation across semantically heterogeneous...
In processes of the production chain of carbide inserts, such as unloading or packaging, the conformity test of the insert type is performed manually, which causes a statistic increase of errors due to monotony and fatigue of workers and the wide variety of insert types. A machine vision system is introduced that automatically measures and inspects the chip-former geometry of inserts, the most significant...
When the training samples of well log data for Kohonen Self-Organizing Maps(KSOM) are large and high dimensional, the adjacent clusters may be overlap in a common region. In the paper, a new model of clustering analysis and recognition for well log data is proposed with Ultsch Emergent Self-organizing Maps(ESOM) of neural network. This method can overcome the weakness of KSOM and optimize the result...
How to solve the problems of monitoring dynamic and variable quality variation, diagnosing the abnormal variation and adjusting the process quality at the right moment, is a difficult problem that modern manufacturing enterprise faces challenges of process quality control. An intelligent decision support system for process quality control is presented, the corresponding decision support modules (such...
It is easy to find the bottlenecks in current production systems and provide an important basis on resource optimization in production line to use Flexsim simulation. First, find the bottlenecks in a production line and proposed a targeted solution based on Flexsim simulation. The simulation also shows that the solution can ease the bottlenecks in the process. Secondly, the output as an evaluation...
In this paper, an architecture using process inference for process planning in manufacturing process has been developed. This architecture is built based on a knowledge base, a resource database and an automatic reasoning kernel. In the automatic reasoning kernel, the generation process of process plan is analyzed and relevant reasoning rules, as well as reasoning engines are defined based on corresponding...
In order to enhance the reuse of product design knowledge, a design knowledge management framework is proposed, which consists of three functional parts: design knowledge acquisition, knowledge modeling, and design knowledge retrieval. A method for design knowledge modeling based on ontology is studied, which includes design knowledge ontology definition, design knowledge base building, and a multi-views...
Nowadays, the supervision process of industrial installations is more and more complex involving the automation of their control. A malfunction generates an avalanche of alarms. The operator in charge of the supervision must face the incident and executes right actions to recover a normal situation. Generally he is drowned under a great number of alarms. To eliminate the risk of incident, expert systems...
Cutting forces prediction is very important in micromilling for cutting tool's design and process planning. This paper presents a new model for uncertainty estimation of dynamic cutting forces in micromilling using a type-2 fuzzy rule-based system. The type-2 fuzzy estimation not only filters the noise and estimates the instantaneous cutting force in micromilling using observations acquired by sensors...
An evaluation model of plastic forming process and forming quality of metal tubes is proposed by considering restrictions of manufacturing resource, geometry and forming quality. Three key technologies including evaluation index system, modeling of evaluation knowledge and evaluation workflow are studied in detail. Simulation method of bending process is introduced to study the machining character...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.