Abstract
This paper presents an adaptive optimal control strategy for an adaptive two-degree-of-freedom quarter car model with magnetorheological dampers. The method assumes the system is fitted with sensors to “read” the road profile ahead of the vehicle. The main objective of the adaptive optimal control is to minimise the root mean square acceleration of the sprung mass. Pointwise constraints (upper and lower suspension travel and minimum tyre vertical force) are considered instead of incorporating the constraints to the cost function via penalty methods. The implemented gradient optimisation routine, the so-called Method of Moving Asymptotes, shows very good performance for optimal controls subjected to large numbers of constraints. For the adaptive approach considered in this paper, the optimal intensity supplied to the MR damper remains constant unless either the quality of the road or the vehicle velocity change. The results obtained show that the adaptive optimal control obtains comfort improvements up to 63% with respect to the best passive constraint–abiding configuration.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Morales, A.L., Nieto, A.J., Chicharro, J.M., Pintado, P.: A semi-active vehicle suspension based on pneumatic springs and magnetorheological dampers. J. Vib. Control 24, 808–821 (2016)
Nieto, A.J., Morales, A.L., Trapero, J.R., Chicharro, J.M., Pintado, P.: An adaptive pneumatic suspension based in the estimation of the excitation frequency. J. Sound Vib. 330, 1891–1903 (2011)
Tudón-Martínez, J.C., Fergani, S., Sename, O., Martínez, J.J., Morales-Menendez, R., Duc, L.: Adaptive road profile estimation in semiactive car suspensions. IEEE Trans. Control Syst. Technol. 23, 2293–2305 (2015)
Sachs, H.K.: An adaptive control for vehicle suspensions. Veh. Syst. Dyn. 8, 201–206 (1979)
Hac, A.: Adaptive control of vehicle suspension. Veh. Syst. Dyn. 16, 57–74 (1987)
Nieto, A.J., Morales, A.L., Chicharro, J.M., Pintado, P.: An adaptive pneumatic suspension system for improving ride comfort and handling. J. Vib. Control 22, 1492–1503 (2016)
Soltane, S., Montassa, S., Mekki, O.B., Fatmi, R.E.: A hysteretic Bingham model for MR dampers to control cable vibrations. J. Mech. Mater. Struct. 10, 195–206 (2015)
International Standardization Organization. ISO 8608: Mechanical vibration - Road surface profiles - Reporting of measured data. Technical report, Geneva, Switzerland (2016)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Palomares, E., Felix, M., Morales, A.L., Nieto, A.J., Chicharro, J.M., Pintado, P. (2020). Comfort Improvement of an Adaptive Vehicle Suspension via Pointwise-Constrained Optimal Control. In: Klomp, M., Bruzelius, F., Nielsen, J., Hillemyr, A. (eds) Advances in Dynamics of Vehicles on Roads and Tracks. IAVSD 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-38077-9_200
Download citation
DOI: https://doi.org/10.1007/978-3-030-38077-9_200
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-38076-2
Online ISBN: 978-3-030-38077-9
eBook Packages: EngineeringEngineering (R0)