Driving simulator study on the acceptance of take-over concepts of a Steer-by-Wire functionality
摘要
Innovative Steer-by-Wire steering systems (SbW) offer an enormously increased functional potential compared to conventional EPS steering systems, especially on the way from partially automated driving to highly and fully automated or even autonomous driving (SAE Level 3 and 4 or 5). ADAS play an increasingly important role in today's world of more and more complex and unmanageable traffic scenarios. In order to fulfill the requirements of the Vienna Convention it is mandatory that ADAS for assisted and automated driving are designed to be overrideble by the driver. Therefore, this paper investigates different approaches for a cooperative automation to regain vehicle control by the driver during an ADAS intervention. The basis is a SbW steering model created in advance, which was validated by measurements at the institute's own Hardware-inthe- Loop steering test bench (HiL). The considered ADAS describes an innovative SbW function for automated evasion, which initiates the steering maneuver without the driver's intervention. This driving function is extended by a take-over function, which is considered in different application variants by parameter variation. Both threshold values and the transition behavior between system and driver influence are varied. The focus of this paper is a subsequent subject study on the institute's own driving simulator (Dynamic Vehicle Road Simulator, DVRS), which examines and evaluates the various take-over applications. Subjective criteria for the take-over behavior as well as objective characteristic parameters of vehicle dynamics quantities are included in the evaluation of the application variants.