Implementation Of Computer Integrated Manufacturing Systems Research Articles

Controller area network (CAN) for computer integrated manufacturing systems

Communication acts a central role in computer-integrated manufacturing (CIM). The choice of communication system widely determines the capability and productivity of a factory as a whole. Moreover, in the implementation of CIM systems, the costs associated with the interconnection of the individual CIM components are very important. In CIM, communication is largely used to control programmable manufacturing equipment. Here, the time requirements are high, and error-free data transmission is a necessity. Fieldbuses are special form of local area network dedicated to applications in the field of data acquisition and the control of sensors and actuators in machines or on the factory floor. Many fieldbus standards exist in the market today. Each of them has been invented at different periods by different companies and for different purposes. Controller area network (CAN) is one of the most popular fieldbuses. The highest advantages of CAN are its low cost, abundance of silicon technology, and reliability in networking multiple real-time systems. CAN is a multimaster bus topology and has shown to be very efficient medium for error detection and fault tolerance. CAN's technical specifications are defined in the ISO/OSI network layer spans just two layer of the model. CAN specifies, in many innovative ways, the physical signaling over the media, data formats, timing, error recovery, protocols and arbitration. It does not define the media itself and its connectors, and also the upper layers (usually software) of the model.

A computer integrated manufacturing programmed learning environment

Reviews the wide range of perspectives on the nature, scope and implications of computer integrated manufacturing (CIM). Presents the main deliverable of a three‐year programme of research conducted by the Keele Advanced Manufacturing Group. Entitled CIMple (Computer Integrated Manufacturing Programmed Learning Environment), it comprises a hypermedia‐based and business‐oriented design methodology to assist the user in the analysis, design and implementation of CIM systems. Presents both the underlying models within the methodology and information on how CIMple is used in practice.

Computer integrated manufacturing: An exploratory study of key organizational barriers

Despite claims in recent research and popular business press that a number of attractive benefits can accrue through the use of computer integrated manufacturing systems (CIM), there has generally been only sporadic attempts to adopt and implement them. Case-oriented research using in-depth interviews with multiple respondents in three large corporations was performed during the period 1987 to early 1989; two of the corporations were users of these technologies and the third a vendor of CIM systems. The results of these interviews reinforce the preponderance of managerial and organizational issues over technological issues as a major barrier to effective implementation and use of CIM. Furthermore, the findings point out the prudence of an incremental approach to adoption and implementation of CIM to insure adequate corporate sponsorship. The significant cultural upheaval and organizational changes that occur with introduction of CIM-type technologies are critical factors to be recognized and managed. This exploratory case-based empirical study did not find support for a few of the other issues reported in past research to be problems such as lack of collaboration arrangement between the vendor of the systems and customer, or poor product-process fit or inadequate comparison of technological alternatives when embarking on CIM-type investments. Based on the findings from this study, a number of issues worthy of future research have been pointed out.