Systems Modelling of Steering System using OpenModelica

##plugins.themes.academic_pro.article.main##

Rohit Sankar
Sathish Madaswamy
Arthanareeswaran Palaniappan

Abstract

Steering system is one of the key vehicle-driver interface that impacts driving fatigue and perception of quality by driver. It is also a safety critical system governed by several Homologation requirements. While Homologation rules mandates the steering effort to be within certain limits, for a driver, asymmetric behavior in terms of angle & torque between LH & RH turn is also undesirable. The sub-attributes are affected indirectly by packaging constraints in each vehicle platform and model. For meeting the stringent targets in each variant and to maintain minimal unique parts, several design iterations would be needed. Physical testing involves higher cost and time. Hence development of a steering system simulation model becomes essential. This paper details the development of a steering model to simulate and analyze the steering system performance of commercial vehicles. A single steer model with hydraulic assistance is developed using OpenModelica (OM), an open source system modelling software. The parameters such as steering wheel effort, wheel lock angles, Ackermann error and Turning circle diameter (TCD) are computed along with prediction of dry park effort. Based on iterations, an optimized configuration with reduced asymmetry can be derived.

##plugins.themes.academic_pro.article.details##

Author Biographies

Rohit Sankar

Product Development, Ashok Leyland, Chennai - 600103, Tamilnadu, India.

Sathish Madaswamy

Product Development, Ashok Leyland, Chennai - 600103, Tamilnadu, India.

Arthanareeswaran Palaniappan

Product Development, Ashok Leyland, Chennai - 600103, Tamilnadu, India.

How to Cite
Rohit Sankar, Sathish Madaswamy, & Arthanareeswaran Palaniappan. (2022). Systems Modelling of Steering System using OpenModelica. ARAI Journal of Mobility Technology, 2(3), p297–306. https://doi.org/10.37285/ajmt.2.3.8

References

  1. Ma B, Yang Y, Liu Y, Ji X, Zheng H. Analysis of vehicle static steering torque based on tire–road contact patch sliding model and variable transmission ratio. Advances in Mechanical Engineering. September 2016. DOI: 10.1177/1687814016668765
  2. Craig E. Beal & Sean Brennan (2021) Modeling and friction estimation for automotive steering torque at very low speeds, Vehicle System Dynamics, 59:3, 458- 484, DOI: 10.1080/00423114.2019.1708416
  3. Chase, Herbert. “A Study of Modern Automotive- Vehicle Steering-Systems.” SAE Transactions, vol. 18, 1923, pp. 364–426. JSTOR, http://www.jstor.org/stable/44723675.
  4. Durstine, John W. “The Truck Steering System from Hand Wheel to Road Wheel.” SAE Transactions, vol. 82, 1973, pp. 93–150. JSTOR, http://www.jstor.org/stable/44716303.
  5. Kim, D., Tak, T., Kuk, M., Park, J. et al., "Evaluation and Experimental Validation of Steering Efforts Considering Tire Static Friction Torque and Suspension and Steering Systems Characteristics," SAE Technical Paper 2007-01- 3641, 2007, DOI: 10.4271/2007-01-3641.
  6. Gillespie, T.D. “Fundamentals of Vehicle Dynamics,” SAE International Warrendale, PA 978-1-56091-199-9 1992 10.4271/R-114
  7. Upadhyay, V., Pathak, A., Kshirsagar, A., Khan, I. et al., "Development of Methodology for Steering Effort Improvement for Mechanical Steering in Commercial Vehicles," SAE Technical Paper 2010- 01-1887, 2010, DOI: 10.4271/2010-01-1887.
  8. Weinberger, M., Vena, G., Schramm, D. (2017). Influencing factors on steering wheel torque during the static parking manoeuvre. In: Bargende, M., Reuss, HC., Wiedemann, J. (eds) 17. Internationales Stuttgarter Symposium. Proceedings. Springer Vieweg, Wiesbaden. DOI: 10.1007/978-3-658-16988-6_71