Zusammenfassung
Due to decreasing product life cycles, modern production facilities requirerapid adaptation to new requirements. In addition, easier maintainability iscalled for in order to achieve a higher availability.This can be accomplished by means of modular, reconfigurable machines andfacilities. For this purpose, machine modules with new system boundaries haveto be designed as mechatronic and self-sustaining units to achievereconfigurable machining systems. Thus new generations of machineconfigurations can be created, which are characterised by both, theirmodularity and also by the functional seclusiveness of their modules. Therebyon the one hand the maintainability of the complete machine is improvedbecause troubleshooting is confined to individual machine modules. On theother hand the extendibility of the machine is enhanced, since the complexityof the module interfaces is reduced by the integration of function control anda new communication system. Nowadays, machining systems are worldwide on a very high level, regardingmechanics as well as control technology. Therefore, in the case of challengingsub-assemblies like drive and control systems and technological components(e.g. high-frequency spindles and processing heads) the emphasis should beplaced on the integration of these components in specialised machine and plantconfigurations especially by reducing the interfaces by a new communicationsystem. In the future, technological innovations can be primarily expectedfrom the introduction of highly integrated mechatronic machine modules.In this article, in line with a research study, analysis and investigation ofa new communication system are presented to reduce interfaces and save cablesfor a mechatronic self-sustainable modules, which will result in new modularmachine concepts.A method similar to the poweline communication technology will be developed.Therefor investigations to the existing channels will be done. The channelbetween the net inverter witch is containd in the swischboard of a machinetool and the load inverter witch finds oneself nearby the motor is the dc-bus.Signals from the switchboard will be modulated on the dc-bus to avoidadditional cables. The mayor benefit of this system is the need of only thedc-bus cable from the switchboard to the motor.For this goal disturbans investigations of the swiching power semiconductors(IGBTs) in an inverter and impedanz analyses of the conected components willbe made.In a second step an ofdm-modem will be developed to show the functionallity ofthe system. With this modem position signals will be transfered from theswitchboard over the dc-bus to the load inverter by modulation on the dc-buswithout using additionl cables and sensor signals from the motor will bepassed back.With this new communication system the far-reaching mechatronic approach isnot confined to individual machining systems, larger manufacturing facilitiesin particular attain a better reconfigurability by modularisation andsimplification of interfaces.
Nutzer
