Road Condition Estimation with Data Mining Methods using Vehicle Based Sensors
Road Condition Estimation with Data Mining Methods using Vehicle Based Sensors

Author: Masino, Johannes

Publisher: KIT Scientific Publishing

Published: 2021-03-31

Total Pages: 234

ISBN-13: 3731510049

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The work provides novel methods to process inertial sensor and acoustic sensor data for road condition estimation and monitoring with application in vehicles, which serve as sensor platforms. Furthermore, methods are introduced to combine the results from various vehicles for a more reliable estimation.

Stochastic Range Estimation Algorithms for Electric Vehicles using Data-Driven Learning Models
Stochastic Range Estimation Algorithms for Electric Vehicles using Data-Driven Learning Models

Author: Scheubner, Stefan

Publisher: KIT Scientific Publishing

Published: 2022-06-03

Total Pages: 190

ISBN-13: 3731511665

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This work aims at improving the energy consumption forecast of electric vehicles by enhancing the prediction with a notion of uncertainty. The algorithm itself learns from driver and traffic data in a training set to generate accurate, driver-individual energy consumption forecasts.

Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces
Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces

Author: Pinay, Julien

Publisher: KIT Scientific Publishing

Published: 2024-01-16

Total Pages: 196

ISBN-13: 3731513285

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Ihrer Arbeit in der Originalsprache: This work aims at identifying relevant road surface characteristics to mitigate tire-road noise of free-rolling tires using a systematic approach. As using open porous roads is already known as an efficient measure to reduce tire rolling noise, this study will focus on compact road surfaces which have a low acoustic absorption. Measurements on standardized ISO 10844 test tracks and on public roads are used to study the norm's representativity and its completeness.

Measurable Safety of Automated Driving Functions in Commercial Motor Vehicles - Technological and Methodical Approaches
Measurable Safety of Automated Driving Functions in Commercial Motor Vehicles - Technological and Methodical Approaches

Author: Elgharbawy, Mohamed

Publisher: KIT Scientific Publishing

Published: 2023-01-13

Total Pages: 268

ISBN-13: 3731512548

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With the further development of automated driving, the functional performance increases resulting in the need for new and comprehensive testing concepts. This doctoral work aims to enable the transition from quantitative mileage to qualitative test coverage by aggregating the results of both knowledge-based and data-driven test platforms. The validity of the test domain can be extended cost-effectively throughout the software development process to achieve meaningful test termination criteria.

Probabilistic Prediction of Energy Demand and Driving Range for Electric Vehicles with Federated Learning
Probabilistic Prediction of Energy Demand and Driving Range for Electric Vehicles with Federated Learning

Author: Thorgeirsson, Adam Thor

Publisher: KIT Scientific Publishing

Published: 2024-09-03

Total Pages: 190

ISBN-13: 3731513714

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In this work, an extension of the federated averaging algorithm, FedAvg-Gaussian, is applied to train probabilistic neural networks. The performance advantage of probabilistic prediction models is demonstrated and it is shown that federated learning can improve driving range prediction. Using probabilistic predictions, routing and charge planning based on destination attainability can be applied. Furthermore, it is shown that probabilistic predictions lead to reduced travel time.

Trajectory optimization based on recursive B-spline approximation for automated longitudinal control of a battery electric vehicle
Trajectory optimization based on recursive B-spline approximation for automated longitudinal control of a battery electric vehicle

Author: Jauch, Jens

Publisher: KIT Scientific Publishing

Published: 2024-03-01

Total Pages: 264

ISBN-13: 3731513323

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This work describes a method for weighted least squares approximation of an unbounded number of data points using a B-spline function. The method can shift the bounded B-spline function definition range during run-time. The approximation method is used for optimizing velocity trajectories for an electric vehicle with respect to travel time, comfort and energy consumption. The trajectory optimization method is extended to a driver assistance system for automated vehicle longitudinal control.

Development of a CO2e quantification method and of solutions for reducing the greenhouse gas emissions of construction machines
Development of a CO2e quantification method and of solutions for reducing the greenhouse gas emissions of construction machines

Author: Ays, Isabelle Charlotte

Publisher: KIT Scientific Publishing

Published: 2022-06-27

Total Pages: 330

ISBN-13: 3731510332

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This work focuses on the development of a quantification method for GHG (CO2e) emissions from construction machines. The method considers CO2e reduction potentials in the time past-present–future, through influencing factors from six pillars: Machine efficiency, process efficiency, energy source, operating efficiency, material efficiency and CCS. In addition, transformation solutions are proposed to reduce GHG emissions from construction machines like liquid methane, fuel cell drive or CCS.

Process simulation of wet compression moulding for continuous fibre-reinforced polymers
Process simulation of wet compression moulding for continuous fibre-reinforced polymers

Author: Poppe, Christian Timo

Publisher: KIT Scientific Publishing

Published: 2022-07-18

Total Pages: 332

ISBN-13: 3731511908

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Interdisciplinary development approaches for system-efficient lightweight design unite a comprehensive understanding of materials, processes and methods. This applies particularly to continuous fibre-reinforced plastics (CoFRPs), which offer high weight-specific material properties and enable load path-optimised designs. This thesis is dedicated to understanding and modelling Wet Compression Moulding (WCM) to facilitate large-volume production of CoFRP structural components.

Mesoscale simulation of the mold filling process of Sheet Molding Compound
Mesoscale simulation of the mold filling process of Sheet Molding Compound

Author: Meyer, Nils

Publisher: KIT Scientific Publishing

Published: 2022-07-12

Total Pages: 292

ISBN-13: 3731511738

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Sheet Molding Compounds (SMC) are discontinuous fiber reinforced composites that are widely applied due to their ability to realize composite parts with long fibers at low cost. A novel Direct Bundle Simulation (DBS) method is proposed in this work to enable a direct simulation at component scale utilizing the observation that fiber bundles often remain in a bundled configuration during SMC compression molding.

Numerical prediction of curing and process-induced distortion of composite structures
Numerical prediction of curing and process-induced distortion of composite structures

Author: Bernath, Alexander

Publisher: KIT Scientific Publishing

Published: 2021-10-29

Total Pages: 294

ISBN-13: 3731510634

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Fiber-reinforced materials offer a huge potential for lightweight design of load-bearing structures. However, high-volume production of such parts is still a challenge in terms of cost efficiency and competitiveness. Numerical process simulation can be used to analyze underlying mechanisms and to find a suitable process design. In this study, the curing process of the resin is investigated with regard to its influence on RTM mold filling and process-induced distortion.