Mobile CPS Networking in Production by Real-time-capable Wireless Communication

Project sponsor



Hintergrund

Presently, the industry is on the threshold to the fourth industrial revolution. Within the working group Industry 4.0 chaired by Dr. Siegfried Dais (Robert-Bosch GmbH) and Prof. Henning Kagermann (acatech - Deutsche Akademie der Technikwissenschaften) a prospective study about the factories of the future was conducted. In the final report some relevant aspects have been identified, which are necessary to realize these factories of the future. Then, industrial production will be characterized by high product individualization and a most flexible (large-scale) production. In order to achieve this, cyber-physical systems (CPS) will be integrated into the production and, together with storage systems, create a smart factory. In the smart factory, a wide range of information will be exchanged between stationary and mobile CPS – more and more also wirelessly.

The study also resulted in a need for research for making this paradigm a reality. For the realization a horizontal and a vertical network of production cells with different CPS and a continuous engineering along the value-added chain is required. Therefore, it is of vital importance to explore, how communication between CPS will be possible in consideration of industrial communication requirements, and how consequently Smart Factories with mobile systems can result.

Overall, in factories of the future the use of cyber-physical systems (CPS) will increase the necessity for real-time wireless communication considerably, because mobile CPS will also communicate more with each other. However, up to now there is no solution how the requirements of the cell level/CPS can be met. But, all wireless communication standards existing in the industry do not allow a real-time data transmission as needed on cell level or in CPS. There are mechanisms lacking for taking synchronized actions with different communication partners. Further, no wireless communication standard can reach the required reliability. Nevertheless, there are standards as, for example, LTE, which can be used for the CPS after appropriate adjustments are made.



Objective

Consequently, a real-time-capable wireless communication solution for the CPS of production facilities is to be found within this project. This is to be realized by an extension of the wireless communication standard LTE. In order to achieve this goal, adequate synchronization and stabilization mechanisms have to be developed.