Mittwoch, 08. Mai 2024

Driving dynamics metrics for over-actuated vehicles

Topic and Goal of the Thesis

In the development of motor vehicles, evaluation methods of driving characteristics play a central role because they are necessary for a targeted improvement of the vehicle. This continuous improvement is intended to ensure that a competitive product can be offered. In addition to efficiency, driving characteristics such as driving experience and safety are also of interest.

Objective methods, such as self-steering behaviour according to Bergmann, or subjective methods, such as questionnaires based on test person studies, are used for evaluation. Due to the complexity of the system, subjective methods are often used, whereby a group of trained specialists carry out vehicle assessments on a test track according to previously defined criteria. For example, a target/actual comparison of the yaw rate is used as a stability metric and the target behaviour of the yaw rate is determined subjectively by experienced drivers during development. This means that the metric is limited in its general validity, as the target behaviour is only given for a specific vehicle.

Current vehicle development shows a trend towards autonomous and over-actuated vehicles. In the final expansion stage, these vehicles should not have a human fallback level and have potentially unfavourable driving dynamics characteristics due to their orientation towards purpose design. For this reason, an objective quantification method of stability is necessary, for example, in order to increase safety in critical situations by predicting instability

In this thesis, known vehicle dynamics metrics are to be analysed with regard to their use cases and their applicability to over-actuated vehicles is to be investigated. If necessary, the general validity of the metrics is to be extended by reducing simplifications.

Working Points

• Literature research on vehicle dynamic metrics and state of the art
• Definition and categorisation of metrics
• Investigation of transferability to over-actuated vehicles
• Extension of the models and comparison of metrics if necessary

Requirements

• Good English or German language skills
• Reliability, commitment and enjoyment of working independently
• Experience with Matlab
• Experience with Automotive Engineering
• Experience with Vehicle Dynamics

Hinweis: Bitte kurzen Lebenslauf und eine Notenübersicht anhängen.