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Model-Based System Engineering Approach for Steering Feel Simulation for Passenger Vehicles
Technical Paper
2021-26-0400
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The basic function of steering system is to control the direction of the vehicle. The driver applies effort on the steering wheel and receives feedback through the steering system as a result of tire to road interaction. This feedback consists of a haptic (force) feedback which is directly felt by the driver and it is termed as steering feel. Precise steering feel gives better driving experience and is decisive factor for customer to buy a vehicle as well as for OEMs in building brand image. Along with steering parameters, suspension and tire parameters also has significant impact on steering feel. In past, modelling of the steering system was done at component level or with simplified vehicle system. Such approaches had not given accurate results of steering feel metric and resulted in incorrect steering design parameter selection. In order to replicate actual vehicle characteristics, complex and detailed modelling of steering, tire and suspension subsystems is necessary.
This study proposes high fidelity model-based system engineering approach for prediction of the steering feel. In this methodology, detailed steering model is developed consisting of assist map, steering stiffness, steering gear ratio. Advanced tire, suspension models are built and integrated with 18 degree of freedom chassis model. Simulation is performed according to ISO 7401. The quantities such as steering wheel torque, lateral acceleration, yaw rate, steering wheel angle are measured in simulation. Steering feel metric parameters are extracted from these measured quantities and compared with physical testing measurement. This system engineering based modelling approach resulted in high accuracy results compared with testing data for transient on-centre handling. Proposed approach can be used at initial design stage, sensitivity analysis, optimization of steering design parameters to improve steering feel enabling driving experience to customers.
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References
- Fang , Z. , Guo , X.
- Wang , X.-F. Study on Simulation of on-Center Handling Tests Global Journal of Researches in Engineering: B, Automotive Engineering, Volume 16 2016
- Jang , B. and Karnopp , D. Simulation of Vehicle and Power Steering Dynamics UsingTire Model Parameters Matched to Whole Vehicle Experimental Results Vehicle System Dynamics: International Journal ofVehicle Mechanics and Mobility 33 2 2000 121 133
- Lu , Q. , Weil , S. , and Jianhua , W. Simulation Modeling and Analysis of Hydraulic Steering System with Flow Amplification Based on AMESIM Applied Mechanics and Materials 602-605 2014 713 718
- Pfeffer , P.E. , Harrer , M. , and Johnston , D.N. Interaction of Vehicle and Steering System Regarding On-Centre Handling Vehicle System Dynamics: International Journal ofVehicle Mechanics and Mobility 46 5 2008 413 428 10.1080/00423110701416519
- Van Ende , K. , Kallmeyer , F. , Nippold , C. , Henze , R. et al. Analysis of Steering System Elasticities and their Impact on On-Centre Handling’ Int. J. Vehicle Design 70 3 2016 211 233
- https://www.nasa.gov/consortium/ModelBasedSystems
- AMESIM Inc. All Tutorial Files AMESIM Inc. September 2009
- ISO 7401:2011(en)
- https://www.abdynamics.com/en/products/track-testing/driving-robots/steering-robots