Modelling and Development of a Pseudo-Hydraulic Power Steering Model for use in Real-Time Applications

Theodor Ensbury
Claytex Services Ltd. Edmund House, Rugby Road, Leamington Spa, CV32 6EL, UK

Peter Harman
CAE Tech Limited, Leamington Spa, UK

Mike Dempsey
Claytex Services Ltd. Edmund House, Rugby Road, Leamington Spa, CV32 6EL, UK

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp18148137

Ingår i: Proceedings of the 2nd Japanese Modelica Conference, Tokyo, Japan, May 17-18, 2018

Linköping Electronic Conference Proceedings 148:20, s. 137-146

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Publicerad: 2019-02-21

ISBN: 978-91-7685-266-8

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Driver-in-the-loop (DiL) simulation is playing an increasing role in automotive OEM development processes. Vehicle models used in these activities therefore need to be as accurate, and realistic, as possible. This paper will present the modelling and development of a pseudo-hydraulic power steering model, designed for usage in DiL applications. Specific focus during development has been towards the quantification and analysis of the torque feedback from the steering model to the simulator rig steering wheel, to produce as realistic a steering ‘feel’ as possible. Metrics derived from physical testing of vehicle steering systems have been deployed to analyze the torque feedback of the steering system. Subsequent assessment of the steering model and specific parameterization has been used to inform the model parameters utilized. Results quantifying the performance of the steering model during full vehicle testing using the Claytex VeSyMA platform are presented.


Driver-in-the-loop, DiL, steering feel, hydraulic power steering


Johan Andreasson, Naoya Machida, Masashi Tsushima, John Griffin and Peter Sundström (2016). Deployment of highfidelity vehicle models for accurate real-time simulation. Proceedings of 1st Japanese Modelica Conference, pp78-86, 2016. DOI:10.3384/ecp1612495

Ansible Motion: Looking Down the Road: Driving Simulator Technology and How Automotive Manufacturers Will Benefit. White paper, 2015.

J.P. Chrstos, P.A. Grygier (1997). Experimental Testing of a 1994 Ford Taurus for NADSdyna Validation. SAETechnical Paper 970563, 1997.

H. Dankowicz (1999). Modelling of dynamic friction phenomena. ZAMM 1999;79:399–409.

Pierre Dupont, Vincent Hayward, Brian Armstrong and Friedhelm Altpeter (2002). Single state elastoplastic friction models. Automatic Control, IEEE Transactions on Automatic Control, 47.5 (2002): 787-792.

D.G. Farrer (1993). An Objective Measurement Technique for the Quantification of On-Centre Handling Quality, SAE Technical Paper 930827, 1993.

Hans B. Pacejka (2012). Tyre and Vehicle Dynamics, 3nd edition. Oxford: Elsevier, pp 356-404.

Nissan. 2018. Electro-Hydraulic power steering system. Online. Accessed 18 March 2018. Available at: https://www.nissanglobal.com/EN/TECHNOLOGY/OVERVIEW/ehpss.html

P. E. Pfeffer, M. Harrer and D.N Johnston (2008). Interaction of vehicle and steering regarding on-centre handling. Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility, 46:5, 413-428, DOI: 0.1080/00423110701416519

Marcus Rösth (2009). Hydraulic Power Steering System Design in Road Vehicles. Doctoral Thesis, Department of Management and Engineering, Linköping University, 2009.

B.A.M van Daal (2007). Friction and compliance identification in a vehicle’s steering system. Extern traineeship report, Eindhoven University of Technology, 2007.

Xuxin He and Zhicheng Su (2012). Links between Subjective Assessments and Objective Metrics for Steering. Master’s Thesis, KTH Royal Institute of Technology, Stockholm Sweden, 2012.

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