Hardware-in-the-loop testing of a hybrid Brake-by-wire system for electric vehicle
SAE-PP-00240
03/01/2022
- Content
- Recent trends in automotive engineering, such as electrification and automation, are opening chances as well as challenges due to the need of new chassis components (e.g., drivetrain, brakes, steering, suspension etc.) and control methods. Mechatronic components, so called X-by-wire systems, seem to become game-changers since they allow more efficient vehicle control with a higher operational speed for improving active safety, efficiency and driving comfort. Especially brake-by-wire (BBW) applications step into foreground, since they affect the bespoken aspects but have a limited use on serial vehicles yet due to the current maturity and the high impact of the systems on vehicle architecture. On the other hand, those systems have many advantages e.g., adjustable pedal feel, continuous wheel slip control and more effective recuperation of brake energy. Electromechanical brakes (EMBs) do not need brake fluid which make them easier to integrate (no pipes, no bleeding) and increase environmental friendliness. However, fully EMBs have also stronger functional safety requirements (e.g., redundant system design) that should be considered already on early development stages. Due to high demand for fast and cost-efficient development of BBW systems and functions especially for electric vehicles, the conflict between available testing capacities and design time restrictions is still challenging. One of the reasonable solutions can be the use of the X-in-the-loop validation and testing approach. This methodology deals with the tests of hard- and software at different stages of development process. The present paper deals with the case study on anti-lock braking system (ABS) design via Hardware-in-the-loop (HIL) tests and Rapid Control Prototyping (RCP) techniques. The hybrid brake-by-wire system, used in this study, has electrohydraulic brakes (EHBs) on the front and electromechanical brakes on the rear axle. Aspects like brake system architecture, control design, HIL testing environment, validation studies and their analysis will be further discussed.
- Pages
- 7
- Citation
- Heydrich, M., Ivanov, V., Bertagna, A., Rossi, A. et al., "Hardware-in-the-loop testing of a hybrid Brake-by-wire system for electric vehicle," SAE MobilityRxiv™ Preprint, submitted March 1, 2022, https://doi.org/10.47953/SAE-PP-00240.