process control

Inadequate communication with media discontinuities makes it difficult to implement simulataneous engineering. Missing process data prevent data-based control measures and the layout of design adaptations to unfinished components. Therefore, the subject of this article is the description of a system for real-time data acquisition and the digitalization of the information flow in shipbuilding.

Quality assurances in the automotive industry pose additional processing times which are highly fluctuating and difficult to calculate. Within the rework processes the registration of vehicle positions is done manually. As a result the available information is not continuous and sufficient for an efficient control of these processes. Radio frequency identification (RFID) based positioning systems are one possibility to track the vehicles in the rework process automatically and to provide the required information. This paper presents the potential of a RFID-based positioning system in the rework area as well as examples for technical realization.

Wearable computing systems allow the support of workers in ongoing processes of automotive logistics. In a previous research project a wearable computing system, which is called easyTracing System, was developed. To this date, the easyTracing System is not technically mature because of the following reasons: First of all, the system was just tested in a laboratory. Hence, field tests are necessary, for example respective robustness. Besides, for supporting workers an efficient method for process controlling has to be developed. Both to make the technology of the easyTracing System workable and to develop an efficient method for process controlling are objects of research. This paper presents an approach for both development projects with the characteristic of a simultaneous processing.

Engineering change management is a complex process for companies involved in machinery, equipment and plant manufacture, and is critical to success. More is involved here than just following up changes to drawings or managing drawing versions. Individual manufacturers in the industry have to deal with a large number of different change issues on a daily basis, which, depending on the type of change, involve different areas and company staff members. A requirement for change generally involves a great many levels of management and administrative units within the company, from design through to purchase, logistics and cost management. To establish effective change management in the company, fully integrated and transparent process management is required, covering all areas and dealing with the total product life cycle.

To reduce main operating time during machining processes it is necessary to increase the relevant process parameters. For single lip drilling these parameters are feed rate and cutting velocity. In the case of an increase of the process parameters it comes to an unwanted effect, the so-called chattering, which affects both the quality of the bore holes and the tool life in a negative way. The goal is to avoid these oscillations by implementing an adaptronical tool holder.