FG Methoden der Produktentwicklung und Mechatronik

16 Items

Recent Submissions
Methodology for Estimating the Spatial and Temporal Power Demand of Private Electric Vehicles for an Entire Urban Region Using Open Data

Straub, Florian ; Streppel, Simon ; Göhlich, Dietmar (2021-04-08)

With continuous proliferation of private battery electric vehicles (BEVs) in urban regions, the demand for electrical energy and power is constantly increasing. Electrical grid infrastructure operators are facing the question of where and to what extent they need to expand their infrastructure in order to meet the additional demand. Therefore, the aim of this paper is to develop an activity-bas...

Modeling and Experimental Investigation of Thermal Comfort and Energy Consumption in a Battery Electric Bus

Cigarini, Francesco ; Fay, Tu-Anh ; Artemenko, Nikolay ; Göhlich, Dietmar (2021-01-06)

In battery electric buses (e-buses), the substantial energy consumption of the heating, ventilation, and air conditioning (HVAC) system can cause significant reductions of the available travel range. Additionally, HVAC systems are often operated at higher levels than what required for the thermal comfort of the passengers. Therefore, this paper proposes a method to experimentally investigate th...

Environmental Impact of Subsidy Concepts for Stimulating Car Sales in Germany

Scharf, Malte ; Heide, Ludger ; Grahle, Alexander ; Syré, Anne Magdalene ; Göhlich, Dietmar (2020-12-01)

In 2020, vehicle sales decreased dramatically due to the COVID-19 pandemic. Therefore, several voices have demanded a vehicle subsidy similar to the “environmental subsidy” in Germany in 2009. The ecological efficiency of vehicle subsidies is controversially discussed. This paper establishes a prognosis of the long-term environmental impacts of various car subsidy concepts. The CO2 emissions of...

A Comprehensive TCO Evaluation Method for Electric Bus Systems Based on Discrete-Event Simulation Including Bus Scheduling and Charging Infrastructure Optimisation

Jefferies, Dominic ; Göhlich, Dietmar (2020-08-19)

Bus operators around the world are facing the transformation of their fleets from fossil-fuelled to electric buses. Two technologies prevail: Depot charging and opportunity charging at terminal stops. Total cost of ownership (TCO) is an important metric for the decision between the two technologies; however, most TCO studies for electric bus systems rely on generalised route data and simplifyin...

Methodology for Determining Charging Strategies for Freight Traffic Vehicles based on Traffic Simulation Results

Miranda Jahn, Ricardo ; Syré, Anne Magdalene ; Grahle, Alexander ; Martins-Turner, Kai ; Göhlich, Dietmar (2020-12-01)

The decarbonization of transport is one major challenge in the upcoming years. One possible solution is the use of battery electric vehicles (BEV). While electric passenger cars and their charging strategies are already in series production, battery electric trucks and their charging strategies are still mostly in the prototype stage. The range limitations of battery electric trucks represent a...

Methoden zur Entwicklung beanspruchungsgerechter gradierter Bauteileigenschaften mittels Laserumschmelzverfestigen

Werner, Walter Johannes Sebastian (2020)

Verfahren zur Erzeugung gradierter Eigenschaften ermöglichen die für einen Lastfall maßgeschneiderte Konstruktion oder Adaption eines Bauteils. Exemplarische Verfahren sind das Aufkleben von Faserverbundpatches, das Walzen mit variabler Blechstärke, Tailored Blanks, Tailored Tempering sowie das Einbringen lokaler Kaltverfestigungen. Eine weitere Methode, das Laserumschmelzverfestigen, basiert a...

Method for a Multi-Vehicle, Simulation-Based Life Cycle Assessment and Application to Berlin’s Motorized Individual Transport

Syré, Anne Magdalene ; Heining, Florian ; Göhlich, Dietmar (2020-09-06)

The transport sector in Germany causes one-quarter of energy-related greenhouse gas emissions. One potential solution to reduce these emissions is the use of battery electric vehicles. Although a number of life cycle assessments have been conducted for these vehicles, the influence of a transport system-wide transition has not been addressed sufficiently. Therefore, we developed a method which ...

Social Sustainability in the Development of Service Robots

Kohl, Jonas Laurenz ; van der Schoor, Michel Joop ; Syré, Anne Magdalene ; Göhlich, Dietmar (2020-06-11)

We introduce the concept of social sustainability, intertwined with ecological and economic aspects, to the field of service robots and comparable automation technology. It takes a first step towards a comprehensive guideline that operationalizes and applies social sustainability. By applying this guideline to the project MURMEL we offer a concept that collects and rates social key issues to vi...

Methodischer Festigkeitsnachweis von Bauteilen unter Berücksichtigung lokaler Härte und Einbauspiel am Beispiel formschlüssiger Kupplungen

Fürst, Thomas (2019)

Kupplungen gehören zu den wichtigsten Maschinenelementen. Sie ermöglichen die Drehmomentübertragung und Verbindung von Wellen. Für die Auslegung der Kupplungskomponenten haben sich in den letzten Dekaden zahlreiche Leitfäden und Regelwerke etabliert. Die Kupplungselemente sind einerseits der Forderung nach immer leichterer und kompakterer Bauweise unterworfen, andererseits wird gleichzeitig ste...

Methodischer Technologievergleich von Systemkonzepten für die Elektrifizierung von Stadtbussen

Fay, Tu-Anh (2019)

Vor dem Hintergrund des Klimawandels und der Schadstoffbelastung der Luft in urbanen Ballungsräumen müssen zunehmende Anstrengungen unternommen werden um dem entgegenzuwirken. Die Elektrifizierung des öffentlichen Personennahverkehrs spielt dabei eine wichtige Rolle, weil durch die hohen Laufleistungen der Linienbusse sich die Elektrifizierung hier besonders positiv auf die Umwelt auswirkt. D...

Methodische Entwicklung einer modularen Lasersintermaschine zur Herstellung von bioresorbierbaren Implantatmatrizen

Kautz, Clemens Kolja (2019)

Eine aus dem Bereich der regenerativen Medizin stammende visionäre Anwendung der AM-Technologie ist die Fertigung von individuell angepassten Implantaten und Organen. Werden zur Herstellung von Implantatmatrizen, dem Gerüst zum Gewebeaufbau, bioresorbierbare Werkstoffe mittels Lasersintern verarbeitet, verbleibt das erzeugte Implantat nach der Transplantation im Körper des Patienten und wird do...

Comparative study of two dynamics-model-based estimation algorithms for distributed drive electric vehicles

Zhang, Xudong ; Göhlich, Dietmar ; Fu, Chenrui (2017)

The effect of vehicle active safety systems is subject to the accurate knowledge of vehicle states. Therefore, it is of great importance to develop a precise and robust estimation approach so as to deal with nonlinear vehicle dynamics systems. In this paper, a planar vehicle model with a simplified tire model is established first. Two advanced model-based estimation algorithms, an unscented Kal...

Comparative study of two dynamics-model-based estimation algorithms for distributed drive electric vehicles

Zhang, Xudong ; Göhlich, Dietmar ; Fu, Chenrui (2017)

The effect of vehicle active safety systems is subject to the accurate knowledge of vehicle states. Therefore, it is of great importance to develop a precise and robust estimation approach so as to deal with nonlinear vehicle dynamics systems. In this paper, a planar vehicle model with a simplified tire model is established first. Two advanced model-based estimation algorithms, an unscented Kal...

Methodische Entwicklung und Bewertung von Elektrifizierungskonzepten für innerstädtische Nutzfahrzeuge

Gräbener, Sven (2017)

Der Einsatz elektrischer und hybridisierter Antriebe ermöglicht die Energieeffizienz von Fahrzeugen zu steigern und gleichzeitig lokale Emissionen zu senken. Insbesondere innerstädtisch tragen schwere Nutzfahrzeuge durch hohe Kraftstoffverbräuche und starke Geräuschentwicklung auf anspruchsvollen Einsatzprofilen besonders zu auftretenden Emissionen bei. Bei Pkw und Linienbussen existieren berei...

A hierarchical estimator development for estimation of tire-road friction coefficient

Zhang, Xudong ; Göhlich, Dietmar (2017-02-08)

The effect of vehicle active safety systems is subject to the friction force arising from the contact of tires and the road surface. Therefore, an adequate knowledge of the tire-road friction coefficient is of great importance to achieve a good performance of these control systems. This paper presents a tire-road friction coefficient estimation method for an advanced vehicle configuration, four...

Integrated traction control strategy for distributed drive electric vehicles with improvement of economy and longitudinal driving stability

Zhang, Xudong ; Göhlich, Dietmar (2017-01-19)

This paper presents an integrated traction control strategy (ITCS) for distributed drive electric vehicles. The purpose of the proposed strategy is to improve vehicle economy and longitudinal driving stability. On high adhesion roads, economy optimization algorithm is applied to maximize motors efficiency by means of the optimized torque distribution. On low adhesion roads, a sliding mode contr...