Project Details
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Product development with sensor integrating machine elements - Managing uncertainty associ-ated to in-situ acquired sensor data in mechatronic systems

Subject Area Engineering Design, Machine Elements, Product Development
Term from 2020 to 2023
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 431606807
 
Final Report Year 2024

Final Report Abstract

The advancing digitalization of our time can be observed in mechanical engineering products and processes alike. From control tasks and condition monitoring to predictive maintenance concepts, digital approaches help and ultimately lead to new customer functions, increased customer satisfaction, generally higher productivity of companies and improved sustainability of products and processes. In order to be able to implement digitalization in mechanical engineering in a targeted manner, condition data on the product or process under consideration in sufficient quality and quantity is required as a cornerstone. Innovative sensor solutions are constantly being developed and implemented in practice to capture this data, with the general aim to place sensors as close to the process as possible – socalled in-situ – in order to keep the uncertainty associated with the measurement to a manageable level. If sensor solutions are placed in a technical system on rotating elements, such as a gearbox shaft, challenges arise with regard to a suitable power supply for the sensor and auxiliary elements as well as the signal transmission from the technical system to the evaluation unit. In the case of sensor integration on rotating elements and the use of sensing design elements, a potential solution is a structure-integrated energy supply and signal transmission via the machine structure. This approach of structure-integrated energy supply and signal transmission, which has not yet been systematically investigated, is the subject of this research project and has been the subject of fundamental research over the past 3.5 years. The project systematically investigates the properties of electrical paths across the structure of a technical system and the influence of disturbance and operating variables on them. The results obtained in the research project allow conclusions to be drawn about the signal transmission behavior of sliding contacts as well as rolling element bearings as a signal transmission element from a rotating to a stationary system and about the signal transmission behavior of helical gears. Statements can also be made about dominant parasitic capacitances in an industrial gearbox as the technical system under consideration. Findings and experiences from the research project can be directly transferred to parallel research projects of the applicant. In addition, interesting further research questions arise, e.g. with regard to the electrical properties of helical gears.

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