Recent advancements in continuous wheel slip control. - In: Advances in dynamics of vehicles on roads and tracks, (2020), S. 1525-1535
The paper presents an overview of continuous wheel slip control (WSC) methods as the part of anti-lock braking system (ABS) for the several vehicles configurations with friction brakes and electric motors. Performance of proposed WSC design variants using several control techniques has been experimentally evaluated for three different test vehicles: Sport Utility Vehicle (SUV) with decoupled electro-hydraulic brake (DEHB) system, SUV with four individual on-board electric motors (OBM), and compact vehicle with four individual in-wheel motors (IWM). Obtained results demonstrated that proposed continuous WSC variants provide a simultaneous effect on braking efficiency and ride quality as well as robust operation in various road conditions. Presented summary provides outlook on future perspectives of the continuous WSC and compares its status with conventional rule-based ABS systems.
Torque vectoring control on ice for electric vehicles with individually actuated wheels. - In: Advances in dynamics of vehicles on roads and tracks, (2020), S. 1543-1551
Recent studies on torque vectoring control for electric vehicles proposed various efficient solutions demonstrating improvement of vehicle stability for evasive manoeuvres. However, the torque vectoring on very low friction surfaces such as black ice or wet snow is rarely investigated, especially for the electric vehicles with off-road capability. The presented study contributes to this topic by laying the groundwork for further advanced torque vectoring designs. Within the framework of this paper, the target vehicle is a sport utility vehicle equipped with four on-board electric motors controlling each wheel separately. The functionality of the developed controllers is tested under hardware-in-the-loop simulations for icy road conditions. For this purpose, the tyre model has been parameterized and validated based on the experimental data conducted on a unique terramechanics test rig at Virginia Polytechnic Institute and State University. The test results confirm very good functionality of the developed controllers and demonstrate an improvement of the electric vehicle driving performance.
Real-time simulation of microwave-photonic system for estimating the tangential deformation of tire. - In: 2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO), (2020), insges. 7 S.
https://doi.org/10.1109/SYNCHROINFO49631.2020.9166028
Wheel slip control for the electric vehicle with in-wheel motors: variable structure and sliding mode methods. - In: IEEE transactions on industrial electronics, Bd. 67 (2020), 10, S. 8535-8544
https://doi.org/10.1109/TIE.2019.2942537
Optimization based sliding mode control in active suspensions: design and hardware-in-the-loop assessment. - In: European Control Conference 2020, (2020), S. 1607-1612
https://ieeexplore.ieee.org/document/9143835
Tire particle emissions: demand on reliable characterization. - In: Tire science and technology, ISSN 0090-8657, Bd. 48 (2020), 2, S. 107-122
Tire emissions are recently becoming an important topic in environmental science and among visionary automotive engineers. Deep understanding of the mechanisms involved in tire wear and emissions and their reliable physical/chemical characterization should be assumed as an urgent task. With the aim to contribute to a trustworthy characterization of tire wear and emissions, this paper presents both (i) analysis of state-of-the-art in this field and (ii) a first experimental approach to the collection of particles from a rotating tire in a new developed test box.
https://doi.org/10.2346/tire.19.170181
Modeling of microwave-photonic system for assessing the tangential component of tire deformation. - In: 2020 Wave Electronics and its Application in Information and Telecommunication Systems, (2020), insges. 7 S.
https://doi.org/10.1109/WECONF48837.2020.9131541
Numerical modeling of microwave-photonic sensor system for load sensing bearings. - In: 2020 Wave Electronics and its Application in Information and Telecommunication Systems, (2020), insges. 5 S.
https://doi.org/10.1109/WECONF48837.2020.9131447
Comparative assessment of vehicle anti-lock braking system operation using friction brake mechanisms and e-machine in the vehicle with electric drive of traction wheels. - In: IOP conference series, ISSN 1757-899X, Bd. 819 (2020), 012035, insges. 6 S.
https://doi.org/10.1088/1757-899X/819/1/012035
Comparative study of brake particle emissions. - In: 11th Int. AVL Exhaust Gas and Particulate Emissions Forum, (2020), insges. 15 S.
Friction brakes are used to ensure the deceleration of motor vehicles. As a result of tribological mechanisms, brake disc and brake pad wear occurs, which also leads to the emission of particulate brake dust. Particulate emissions from powertrain systems are becoming increasingly important, particularly due to their special chemical-physical properties. In the present study, brake emissions are characterized as a function of the tribological formation mechanisms and the operating conditions of the wheel brake. The development of suitable test cycles, the requirements for a laboratory test environment and a target-oriented selection of the metrological framework conditions are addressed. Finally, the challenges that arise during the performance of on-road tests (RDE) are described and evaluated.