Integrated Design Tools for Model-Based Development of Innovative Vehicle Chassis and Powertrain Systems

Bonera, E; Gadola, Marco; Chindamo, Daniel; Morbioli, Stefano; Magri, Paolo

doi:10.1007/978-3-030-31154-4_11

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…where l 2 3 is the distance between G and J. For loop o 1 GEDo 1 , the coordinates of joint E in the coordinate system o 1 x 1 y 1 z 1 can be expressed as…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Gritti et al 1 investigated the frictions in steering systems and developed an algorithm to predict the mechanical efficiency and internal friction of steering systems. Bonera et al 2 presented a self-developed tool for suspension and steering design, specifically conceived for intuitive integration in the design process. Zhao et al 3 studied the geometry of the turning wheel.…”

Section: Introductionmentioning

confidence: 99%

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Optimal design of steering trapezoid considering multiple performances of the whole vehicle

Gao

2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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As an important component of the steering system, steering trapezoids should be designed to satisfy multiple performances of the vehicle. In this study, theoretical and simulation analysis has been conducted focusing on the influence of the steering tie rod on the Ackermann error, bump steer, forces at the tie rod joints, and frequency characteristics of the whole vehicle. The results show that the Ackermann error is mainly influenced by the position of the outer point of the steering tie rod. The bump steer is mainly influenced by the Z coordinate of the outer point. The impact force at the joint and the frequency characteristics are mainly influenced by the X and Z coordinates of the outer point of the tie rod. The trends of the evaluation indexes for each performance to the hard point coordinates are not completely consistent and some are conflicting. To integrate the vehicle performance, multi-objective optimization is carried out with Archival Micro Genetic Algorithm, Neighborhood Cultivation Genetic Algorithm, and Non-Dominated Sorting Genetic Algorithm-II algorithms considering the hard point coordinates as variables and the evaluation indexes as optimization objectives. The optimization results show that the relative optimal solutions obtained by the three optimization algorithms provide a significant improvement to the Ackermann error, while other performance indexes have differences. In the practical application of steering trapezoid optimization, it is possible to choose the appropriate optimization algorithm based on the focus of the vehicle performance requirements.

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“…where l 2 3 is the distance between G and J. For loop o 1 GEDo 1 , the coordinates of joint E in the coordinate system o 1 x 1 y 1 z 1 can be expressed as…”

Section: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal design of steering trapezoid considering multiple performances of the whole vehicle

Gao

2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…The models are introduced in detail in the subsequent section. In addition, the transmission equation is given in Equation (6).…”

Section: The Drive Modulementioning

confidence: 99%

“…At present, mainstream vehicle simulation software includes CarSim [1], ADAMS [2], AVL CRUISE [3], and VI-CarRealTime [4][5][6], etc. The software mentioned above have achieved good simulation results in certain simulation fields.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of Permanent Magnet Synchronous Motor (PMSM) Electric Vehicle Based on Simulink

et al. 2022

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As an important component of vehicle design and energy conservation, electric vehicle dynamics simulation is essential, especially under complicated testing conditions. The current commercial vehicle simulation software is mostly used for fuel vehicle dynamics simulation, which lacks accurate electric powertrain parts and open sources. To address this problem, this paper proposes an open-source and flexible vehicle dynamics simulation platform that includes 27 degrees of freedom (DOFs) based on Simulink, which can compatibly support both traditional vehicle dynamics simulations and electric vehicle dynamics simulations. In addition, the platform can support module customization, which is convenient for researchers. Although this platform still needs some iterations to reach industrial and commercial standards, it can already achieve parameter consistency under the stability demands in general scenarios. We believe this work should receive research attention and participation to provide lower thresholds and more references to the dynamic simulation of electric vehicles to reduce vehicle energy consumption.

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“…Such a tool has been self-developed within the Automotive Engineering Group of Brescia University by the authors of this work. The development process is reported in [34]. A thorough validation was carried out by comparing results with commercial tools, like Lotus Suspension Design (Shark ® ) by Lotus Engineering and with the Adams multi-body package.…”

Section: Introductionmentioning

confidence: 99%

On the Influence of Suspension Geometry on Steering Feedback

et al. 2020

Self Cite

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Feedback through the steering wheel is known as the most important source of information to the driver. The so-called steering feeling, composed of self-aligning actions coming from tyres and suspension geometry all the way through mechanical linkages to the driver’s hands, provides vital communication for intuitive driving, and it is therefore utterly important for safety and for a pleasant driving experience as well. Subtle forces and vibrations, due to the interaction between the tyre contact patch and the road surface texture, also play a role, provided they are not heavily filtered or cancelled by the power steering system. Human perception is guided by experience in order to establish correlations between steering feedback and vehicle motion in terms of straight-line stability, cornering speed, tyre adhesion and available friction, vehicle balance, and so on. A front-wheel drive car is potentially a critical vehicle from this point of view, especially when the powertrain can deliver large torque figures, and even more so if a limited-slip differential (LSD) or a similar active device is present in order to improve traction capabilities. Any difference between the two wheels in terms of tractive force can result into the so-called torque steer issue, that is to say, a “pulling” sensation on the steering wheel or a shifting of the vehicle from the desired trajectory. This paper analyses the torque steer phenomenon on an all-wheel-drive, full electric sportscar where a significant portion of the torque is transferred to the front axle. The effects of suspension kinematics and the load variation at tyre contact patch level are taken into account. For evaluating the impact of steering feedback, the VI-grade® simulation software is adopted and a test campaign on the professional driving simulator available at the University of Brescia has been carried out in order to understand the impact of steering feedback on driver perception and performance.

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Integrated Design Tools for Model-Based Development of Innovative Vehicle Chassis and Powertrain Systems

Cited by 4 publications

References 15 publications

Optimal design of steering trapezoid considering multiple performances of the whole vehicle

Optimal design of steering trapezoid considering multiple performances of the whole vehicle

Dynamic Simulation of Permanent Magnet Synchronous Motor (PMSM) Electric Vehicle Based on Simulink

On the Influence of Suspension Geometry on Steering Feedback

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