Development of different Torque-Vectoring control strategies and determination of correlations between controller and setpoint design and subjective driving impressions.

Motivation

Due to the limited fossil fuel resources, electric mobility will become increasingly important in the future, because it will make it possible to decouple the production and use of energy. The advantage of faster response time and better controllability of electric machines compared to combustion engines can also be used here to influence driving dynamics. In order to increase the efficiency of the drive train and thus the range of the vehicles, in future the transverse displacement of drive torques will no longer be realised by systems with brakes and clutches, but by torque adjusters directly in the differential. These new transmissions also have more potential to influence lateral dynamics. This results in new fields of action in the driving dynamics control of these vehicles.

Goal

The project will in principle be divided into two parts:

• Development of various torque vectoring rules
• Feedback of subjective driving impressions to the design of the control system

After the development of alternative controller concepts for the torque vectoring unit, a correlation between subjective driving dynamics impressions and controller design is to be established in real test drives.

Procedure

In the first part, different control strategies for the control unit are developed in addition to the definition of different target specifications (depending on yaw rate, float angle, lateral acceleration, ...). In subsequent test drives the different control strategies are tested and subjectively evaluated. From this, recommendations for future torque vectoring control systems are derived and verified in a second iteration.