This monograph presents a series of research activities with the goal of determining whether pressure measurement films are a suitable tool for a quantitative assessment of the wheel-rail contact area. Firstly, the effect of influential factors such as geometry, applied load and surface roughness on the resulting imprint was thoroughly examined by means of analytically approachable case studies. This allowed a precise determination of the systematic error that alters experimental outcomes. After that, finite element representations of the measurement procedure were explored in order to...

This work discusses the development and application of payload estimation for mobile hydraulic excavators. The methods and results described here are however broadly applicable to any agricultural and construction machines that interact with the environment using a mechanical manipulator. Three key requirements were laid out to define the boundary conditions for the payload estimation method. The first was derived from the standard requirement for on-board weighing scales for construction equipment, which states that the estimate should be within 1% of the full-scale value of the machine. The...

Während der Fahrt in Straßen- und Stadtbahnen sind die Fahrgäste im Innenstadtbereich häufig auftretenden Beschleunigungsänderungen ausgesetzt. Alle im Schienenfahrzeugbereich etablierten Schwingkomfortbewertungsmethoden wurden für Vollbahnfahrzeuge entworfen und können nur eingeschränkt im BOStrab-Bereich eingesetzt werden. In dieser Arbeit wird eine Schwingkomfortbewertungsmethodik für stehende und sitzende Fahrgäste unter Verwendung von Methoden des Maschinellen Lernens entwickelt.