Driving Dynamics
Driving dynamics are closely associated with the terms driving pleasure, driving safety and driving comfort. Resolving the tradeoffs which arise from these design targets requires a detailed examination of the dynamic system "vehicle" and its subsystems, up to the overall system "driver-vehicle-environment".
At FKFS, we achieve this through theoretical and practical investigations. Real and virtual road tests, modeling and simulation and subjective-objective-correlation supplement each other, ensuring integrated treatment of all kinds of question with practical relevance; from concept development, development of control and assistance systems, up to vehicle benchmarking.
Contact
Dr.-Ing. Jens Neubeck
Ph.: +49 711 685-65701
Objectification
Objectification
Making vehicle characteristics measurable
For efficient vehicle development, it is essential to rely not only on the assessments of experienced test drivers. Rather, it is necessary to use objective criteria for the quantitative comparison of different vehicles. With its many years of experience, FKFS can provide targeted support in the process of objectification, i.e. finding the connection between objective vehicle characteristics and subjective driving impressions.
- Use case specific development and definition of objective criteria
- Subjective evaluation and benchmarking in the context of driving tests and subject studies
- In the virtual test drive, driving situations can be precisely reproduced and vehicle characteristics can be modified quickly and easily
- Efficient determination of objective characteristics through road tests and test bench measurements
Motion Control
Motion Control
Achieving increased safety in partially or fully autonomous driving and optimal vehicle dynamics requires the intelligent use of various assistance systems. The FKFS offers extensive expertise in the development, simulation, and implementation of both subsystems and overall concepts. Our expertise includes, for example:
Vehicle Localization
- Fusion of internal and external sensor data
- Communication between vehicle components and different vehicle functions
- Reliable and real-time capable in indoor and outdoor areas
Control and Assistance Systems
- Trajectory following control, ADAS functions, steer and drive-by-wire systems
- Inclusion of driving characteristics, driving comfort and safety aspects in the controller design
- Advanced approaches to robustness, performance enhancement and multi-objective optimization
- Analyses in virtual vehicle tests
Trajectory Planning
- Planning algorithms based on localization and SLAM methods
- Object and obstacle detection
- Advanced optimization strategies
Chassis Systems
Chassis Systems
Active and controlled chassis systems can significantly influence driving dynamics and thus noticeably improve driving safety and comfort. FKFS supports you with its expertise in the development, design and calibration of these systems. This includes, amongst others
- Interconnecting the systems
- Rear axle steering
- Electronic / active roll stabilization
- Active / variable gear ratio steering systems
- Optimized drive torque distribution
Tires
Tires
As the only link between the vehicle and the road, the tire plays a particularly important role in driving dynamics. It has a decisive influence on driving characteristics and ride comfort, but also causes significant emissions through rolling resistance, noise, abrasion and interaction with aerodynamics. With decades of experience in tire modeling and measurements, FKFS can help you launch your project.
- Development of problem-specific proprietary tire models
- Road measurements
- Tire measurement extension for vehicle dynamics test bench
- High-precision measurement of the tire contour in various load conditions
- Development of sensor technology for contact patch deformation measurement
Brake
Brake
The brake system is one of the most safety-relevant systems in a vehicle and its operational and performance capability must be guaranteed at all times.
The increasing electrification of the drivetrain is leading to changes in load spectra and requirements for the brake system. In addition, stricter legal framework conditions pose new challenges for brake development.
- Brake system functions
- Wet fading investigations
- Soiling
- Thermal brake behavior
- residual brake torque measurements
- Concept evaluation of alternative deceleration concepts
