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In this work, we characterise a flexural mechanical amplifier, which is used for the realisation of a miniaturised piezoelectric inchworm motor designed for large force (some N) and stroke (tens of mm) operation as it is required e.g., for medical implants. The characterisation is based on high precision optical displacement measurements and a force self-sensing approach. An optically measured displacement of 292 nm in lateral direction and 910 nm in vertical direction of the flexural mechanical amplifier has been obtained, corresponding to a deflection attenuation factor of 3.1. Piezoelectric self-sensing of force was used to determine a force amplification factor of 3.43 from the mechanical oval structure.
The charge response of a force applied to piezoelectric stack actuators was characterized in the range of 0 N – 20 N for application in piezoelectric self-sensing. Results show linear behavior between ap-plied force and collected charge for both actuators tested in this study. One actuator exhibits a 3.55 times higher sensitivity slope than the other related to its larger capacitance. An error analysis reveals a reduction of relative error in charge measurement with rising forces applied to the actuators.
Digitale Pflegedokumentation, Robotik oder automatisierte Matratzensysteme zur Dekubitusprophylaxe: Pflegetechnologien stellen ein zunehmend relevanter werdendes Thema in der Pflegepraxis dar. Trotz großer Aufmerksamkeit hierfür kann eine nur langsam voranschreitende Durchdringung von Pflegetechnologien in der Praxis attestiert werden. In diesem Beitrag wird die Auswahl und Einführung von Pflegetechnologien in akut- und langzeitstationären Einrichtungen der pflegerischen Versorgung als kritische Phase betrachtet, die es bewusst zu gestalten gilt und deren Umsetzung über das Scheitern oder den Erfolg der Nutzung von Pflegetechnologie in der Praxis entscheidet. Die Erfahrungen der Autorinnen und Autoren, die als Forschende im BMBF-geförderten Cluster „Zukunft der Pflege" an der Einführung und Erprobung von Pflegetechnologien in kooperierenden Praxiseinrichtungen beteiligt sind, werden dazu aufgearbeitet und diskutiert.
The objective of this thesis is to examine the recent rollout of Commercial Excellence, a sales-process standardization and improvement project within the currently ongoing integration of TRW Automotive Holding Corporation into ZF Friedrichshafen AG. Focusing on change management and the challenges posed by resistance to change, the aim is to derive recommendations for action during future rollout phases. Based on leading theories regarding change management, expert interviews delivered mixed results. While it is indicated that resistance to change was only a minor issue throughout the rollout the careful analysis of the collected responses still offered the potential for improvements. Therefore the author was able to identify the inclusion of sales support functions into the project as a solution for resistance to change caused by restrictive data release policies. Additionally, it was found that the diversification of the communication mix as well as centrally offering individualized training programs can further facilitate future rollouts of Commercial Excellence.